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-rw-r--r--net/core/datagram.c45
-rw-r--r--net/core/dev.c108
-rw-r--r--net/core/dev_addr_lists.c97
-rw-r--r--net/core/dev_ioctl.c2
-rw-r--r--net/core/devlink.c5
-rw-r--r--net/core/filter.c409
-rw-r--r--net/core/flow_dissector.c3
-rw-r--r--net/core/neighbour.c174
-rw-r--r--net/core/net-sysfs.c2
-rw-r--r--net/core/net_namespace.c159
-rw-r--r--net/core/netpoll.c2
-rw-r--r--net/core/rtnetlink.c353
-rw-r--r--net/core/skbuff.c115
-rw-r--r--net/core/sock.c14
-rw-r--r--net/core/sock_reuseport.c1
-rw-r--r--net/core/stream.c2
16 files changed, 1084 insertions, 407 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 57f3a6fcfc1e..4bf62b1afa3b 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -728,49 +728,6 @@ fault:
return -EFAULT;
}
-__sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)
-{
- __sum16 sum;
-
- sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));
- if (likely(!sum)) {
- if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
- !skb->csum_complete_sw)
- netdev_rx_csum_fault(skb->dev);
- }
- if (!skb_shared(skb))
- skb->csum_valid = !sum;
- return sum;
-}
-EXPORT_SYMBOL(__skb_checksum_complete_head);
-
-__sum16 __skb_checksum_complete(struct sk_buff *skb)
-{
- __wsum csum;
- __sum16 sum;
-
- csum = skb_checksum(skb, 0, skb->len, 0);
-
- /* skb->csum holds pseudo checksum */
- sum = csum_fold(csum_add(skb->csum, csum));
- if (likely(!sum)) {
- if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
- !skb->csum_complete_sw)
- netdev_rx_csum_fault(skb->dev);
- }
-
- if (!skb_shared(skb)) {
- /* Save full packet checksum */
- skb->csum = csum;
- skb->ip_summed = CHECKSUM_COMPLETE;
- skb->csum_complete_sw = 1;
- skb->csum_valid = !sum;
- }
-
- return sum;
-}
-EXPORT_SYMBOL(__skb_checksum_complete);
-
/**
* skb_copy_and_csum_datagram_msg - Copy and checksum skb to user iovec.
* @skb: skbuff
@@ -810,7 +767,7 @@ int skb_copy_and_csum_datagram_msg(struct sk_buff *skb,
if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
!skb->csum_complete_sw)
- netdev_rx_csum_fault(NULL);
+ netdev_rx_csum_fault(NULL, skb);
}
return 0;
fault:
diff --git a/net/core/dev.c b/net/core/dev.c
index 722d50dbf8a4..754284873355 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -162,6 +162,9 @@ static struct list_head offload_base __read_mostly;
static int netif_rx_internal(struct sk_buff *skb);
static int call_netdevice_notifiers_info(unsigned long val,
struct netdev_notifier_info *info);
+static int call_netdevice_notifiers_extack(unsigned long val,
+ struct net_device *dev,
+ struct netlink_ext_ack *extack);
static struct napi_struct *napi_by_id(unsigned int napi_id);
/*
@@ -1361,7 +1364,7 @@ void netdev_notify_peers(struct net_device *dev)
}
EXPORT_SYMBOL(netdev_notify_peers);
-static int __dev_open(struct net_device *dev)
+static int __dev_open(struct net_device *dev, struct netlink_ext_ack *extack)
{
const struct net_device_ops *ops = dev->netdev_ops;
int ret;
@@ -1377,7 +1380,7 @@ static int __dev_open(struct net_device *dev)
*/
netpoll_poll_disable(dev);
- ret = call_netdevice_notifiers(NETDEV_PRE_UP, dev);
+ ret = call_netdevice_notifiers_extack(NETDEV_PRE_UP, dev, extack);
ret = notifier_to_errno(ret);
if (ret)
return ret;
@@ -1406,7 +1409,8 @@ static int __dev_open(struct net_device *dev)
/**
* dev_open - prepare an interface for use.
- * @dev: device to open
+ * @dev: device to open
+ * @extack: netlink extended ack
*
* Takes a device from down to up state. The device's private open
* function is invoked and then the multicast lists are loaded. Finally
@@ -1416,14 +1420,14 @@ static int __dev_open(struct net_device *dev)
* Calling this function on an active interface is a nop. On a failure
* a negative errno code is returned.
*/
-int dev_open(struct net_device *dev)
+int dev_open(struct net_device *dev, struct netlink_ext_ack *extack)
{
int ret;
if (dev->flags & IFF_UP)
return 0;
- ret = __dev_open(dev);
+ ret = __dev_open(dev, extack);
if (ret < 0)
return ret;
@@ -1733,6 +1737,18 @@ static int call_netdevice_notifiers_info(unsigned long val,
return raw_notifier_call_chain(&netdev_chain, val, info);
}
+static int call_netdevice_notifiers_extack(unsigned long val,
+ struct net_device *dev,
+ struct netlink_ext_ack *extack)
+{
+ struct netdev_notifier_info info = {
+ .dev = dev,
+ .extack = extack,
+ };
+
+ return call_netdevice_notifiers_info(val, &info);
+}
+
/**
* call_netdevice_notifiers - call all network notifier blocks
* @val: value passed unmodified to notifier function
@@ -1744,11 +1760,7 @@ static int call_netdevice_notifiers_info(unsigned long val,
int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
{
- struct netdev_notifier_info info = {
- .dev = dev,
- };
-
- return call_netdevice_notifiers_info(val, &info);
+ return call_netdevice_notifiers_extack(val, dev, NULL);
}
EXPORT_SYMBOL(call_netdevice_notifiers);
@@ -3096,10 +3108,17 @@ EXPORT_SYMBOL(__skb_gso_segment);
/* Take action when hardware reception checksum errors are detected. */
#ifdef CONFIG_BUG
-void netdev_rx_csum_fault(struct net_device *dev)
+void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb)
{
if (net_ratelimit()) {
pr_err("%s: hw csum failure\n", dev ? dev->name : "<unknown>");
+ if (dev)
+ pr_err("dev features: %pNF\n", &dev->features);
+ pr_err("skb len=%u data_len=%u pkt_type=%u gso_size=%u gso_type=%u nr_frags=%u ip_summed=%u csum=%x csum_complete_sw=%d csum_valid=%d csum_level=%u\n",
+ skb->len, skb->data_len, skb->pkt_type,
+ skb_shinfo(skb)->gso_size, skb_shinfo(skb)->gso_type,
+ skb_shinfo(skb)->nr_frags, skb->ip_summed, skb->csum,
+ skb->csum_complete_sw, skb->csum_valid, skb->csum_level);
dump_stack();
}
}
@@ -4525,9 +4544,14 @@ static int netif_rx_internal(struct sk_buff *skb)
int netif_rx(struct sk_buff *skb)
{
+ int ret;
+
trace_netif_rx_entry(skb);
- return netif_rx_internal(skb);
+ ret = netif_rx_internal(skb);
+ trace_netif_rx_exit(ret);
+
+ return ret;
}
EXPORT_SYMBOL(netif_rx);
@@ -4542,6 +4566,7 @@ int netif_rx_ni(struct sk_buff *skb)
if (local_softirq_pending())
do_softirq();
preempt_enable();
+ trace_netif_rx_ni_exit(err);
return err;
}
@@ -4894,7 +4919,7 @@ skip_classify:
* and set skb->priority like in vlan_do_receive()
* For the time being, just ignore Priority Code Point
*/
- skb->vlan_tci = 0;
+ __vlan_hwaccel_clear_tag(skb);
}
type = skb->protocol;
@@ -5227,9 +5252,14 @@ static void netif_receive_skb_list_internal(struct list_head *head)
*/
int netif_receive_skb(struct sk_buff *skb)
{
+ int ret;
+
trace_netif_receive_skb_entry(skb);
- return netif_receive_skb_internal(skb);
+ ret = netif_receive_skb_internal(skb);
+ trace_netif_receive_skb_exit(ret);
+
+ return ret;
}
EXPORT_SYMBOL(netif_receive_skb);
@@ -5249,9 +5279,12 @@ void netif_receive_skb_list(struct list_head *head)
if (list_empty(head))
return;
- list_for_each_entry(skb, head, list)
- trace_netif_receive_skb_list_entry(skb);
+ if (trace_netif_receive_skb_list_entry_enabled()) {
+ list_for_each_entry(skb, head, list)
+ trace_netif_receive_skb_list_entry(skb);
+ }
netif_receive_skb_list_internal(head);
+ trace_netif_receive_skb_list_exit(0);
}
EXPORT_SYMBOL(netif_receive_skb_list);
@@ -5362,11 +5395,13 @@ static void __napi_gro_flush_chain(struct napi_struct *napi, u32 index,
*/
void napi_gro_flush(struct napi_struct *napi, bool flush_old)
{
- u32 i;
+ unsigned long bitmask = napi->gro_bitmask;
+ unsigned int i, base = ~0U;
- for (i = 0; i < GRO_HASH_BUCKETS; i++) {
- if (test_bit(i, &napi->gro_bitmask))
- __napi_gro_flush_chain(napi, i, flush_old);
+ while ((i = ffs(bitmask)) != 0) {
+ bitmask >>= i;
+ base += i;
+ __napi_gro_flush_chain(napi, base, flush_old);
}
}
EXPORT_SYMBOL(napi_gro_flush);
@@ -5391,7 +5426,9 @@ static struct list_head *gro_list_prepare(struct napi_struct *napi,
}
diffs = (unsigned long)p->dev ^ (unsigned long)skb->dev;
- diffs |= p->vlan_tci ^ skb->vlan_tci;
+ diffs |= skb_vlan_tag_present(p) ^ skb_vlan_tag_present(skb);
+ if (skb_vlan_tag_present(p))
+ diffs |= p->vlan_tci ^ skb->vlan_tci;
diffs |= skb_metadata_dst_cmp(p, skb);
diffs |= skb_metadata_differs(p, skb);
if (maclen == ETH_HLEN)
@@ -5639,12 +5676,17 @@ static gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb)
gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
{
+ gro_result_t ret;
+
skb_mark_napi_id(skb, napi);
trace_napi_gro_receive_entry(skb);
skb_gro_reset_offset(skb);
- return napi_skb_finish(dev_gro_receive(napi, skb), skb);
+ ret = napi_skb_finish(dev_gro_receive(napi, skb), skb);
+ trace_napi_gro_receive_exit(ret);
+
+ return ret;
}
EXPORT_SYMBOL(napi_gro_receive);
@@ -5657,7 +5699,7 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
__skb_pull(skb, skb_headlen(skb));
/* restore the reserve we had after netdev_alloc_skb_ip_align() */
skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN - skb_headroom(skb));
- skb->vlan_tci = 0;
+ __vlan_hwaccel_clear_tag(skb);
skb->dev = napi->dev;
skb->skb_iif = 0;
@@ -5762,6 +5804,7 @@ static struct sk_buff *napi_frags_skb(struct napi_struct *napi)
gro_result_t napi_gro_frags(struct napi_struct *napi)
{
+ gro_result_t ret;
struct sk_buff *skb = napi_frags_skb(napi);
if (!skb)
@@ -5769,7 +5812,10 @@ gro_result_t napi_gro_frags(struct napi_struct *napi)
trace_napi_gro_frags_entry(skb);
- return napi_frags_finish(napi, skb, dev_gro_receive(napi, skb));
+ ret = napi_frags_finish(napi, skb, dev_gro_receive(napi, skb));
+ trace_napi_gro_frags_exit(ret);
+
+ return ret;
}
EXPORT_SYMBOL(napi_gro_frags);
@@ -5785,10 +5831,11 @@ __sum16 __skb_gro_checksum_complete(struct sk_buff *skb)
/* NAPI_GRO_CB(skb)->csum holds pseudo checksum */
sum = csum_fold(csum_add(NAPI_GRO_CB(skb)->csum, wsum));
+ /* See comments in __skb_checksum_complete(). */
if (likely(!sum)) {
if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
!skb->csum_complete_sw)
- netdev_rx_csum_fault(skb->dev);
+ netdev_rx_csum_fault(skb->dev, skb);
}
NAPI_GRO_CB(skb)->csum = wsum;
@@ -7467,7 +7514,8 @@ unsigned int dev_get_flags(const struct net_device *dev)
}
EXPORT_SYMBOL(dev_get_flags);
-int __dev_change_flags(struct net_device *dev, unsigned int flags)
+int __dev_change_flags(struct net_device *dev, unsigned int flags,
+ struct netlink_ext_ack *extack)
{
unsigned int old_flags = dev->flags;
int ret;
@@ -7504,7 +7552,7 @@ int __dev_change_flags(struct net_device *dev, unsigned int flags)
if (old_flags & IFF_UP)
__dev_close(dev);
else
- ret = __dev_open(dev);
+ ret = __dev_open(dev, extack);
}
if ((flags ^ dev->gflags) & IFF_PROMISC) {
@@ -7564,16 +7612,18 @@ void __dev_notify_flags(struct net_device *dev, unsigned int old_flags,
* dev_change_flags - change device settings
* @dev: device
* @flags: device state flags
+ * @extack: netlink extended ack
*
* Change settings on device based state flags. The flags are
* in the userspace exported format.
*/
-int dev_change_flags(struct net_device *dev, unsigned int flags)
+int dev_change_flags(struct net_device *dev, unsigned int flags,
+ struct netlink_ext_ack *extack)
{
int ret;
unsigned int changes, old_flags = dev->flags, old_gflags = dev->gflags;
- ret = __dev_change_flags(dev, flags);
+ ret = __dev_change_flags(dev, flags, extack);
if (ret < 0)
return ret;
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index d884d8f5f0e5..81a8cd4ea3bd 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c
@@ -278,6 +278,103 @@ int __hw_addr_sync_dev(struct netdev_hw_addr_list *list,
EXPORT_SYMBOL(__hw_addr_sync_dev);
/**
+ * __hw_addr_ref_sync_dev - Synchronize device's multicast address list taking
+ * into account references
+ * @list: address list to synchronize
+ * @dev: device to sync
+ * @sync: function to call if address or reference on it should be added
+ * @unsync: function to call if address or some reference on it should removed
+ *
+ * This function is intended to be called from the ndo_set_rx_mode
+ * function of devices that require explicit address or references on it
+ * add/remove notifications. The unsync function may be NULL in which case
+ * the addresses or references on it requiring removal will simply be
+ * removed without any notification to the device. That is responsibility of
+ * the driver to identify and distribute address or references on it between
+ * internal address tables.
+ **/
+int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list,
+ struct net_device *dev,
+ int (*sync)(struct net_device *,
+ const unsigned char *, int),
+ int (*unsync)(struct net_device *,
+ const unsigned char *, int))
+{
+ struct netdev_hw_addr *ha, *tmp;
+ int err, ref_cnt;
+
+ /* first go through and flush out any unsynced/stale entries */
+ list_for_each_entry_safe(ha, tmp, &list->list, list) {
+ /* sync if address is not used */
+ if ((ha->sync_cnt << 1) <= ha->refcount)
+ continue;
+
+ /* if fails defer unsyncing address */
+ ref_cnt = ha->refcount - ha->sync_cnt;
+ if (unsync && unsync(dev, ha->addr, ref_cnt))
+ continue;
+
+ ha->refcount = (ref_cnt << 1) + 1;
+ ha->sync_cnt = ref_cnt;
+ __hw_addr_del_entry(list, ha, false, false);
+ }
+
+ /* go through and sync updated/new entries to the list */
+ list_for_each_entry_safe(ha, tmp, &list->list, list) {
+ /* sync if address added or reused */
+ if ((ha->sync_cnt << 1) >= ha->refcount)
+ continue;
+
+ ref_cnt = ha->refcount - ha->sync_cnt;
+ err = sync(dev, ha->addr, ref_cnt);
+ if (err)
+ return err;
+
+ ha->refcount = ref_cnt << 1;
+ ha->sync_cnt = ref_cnt;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(__hw_addr_ref_sync_dev);
+
+/**
+ * __hw_addr_ref_unsync_dev - Remove synchronized addresses and references on
+ * it from device
+ * @list: address list to remove synchronized addresses (references on it) from
+ * @dev: device to sync
+ * @unsync: function to call if address and references on it should be removed
+ *
+ * Remove all addresses that were added to the device by
+ * __hw_addr_ref_sync_dev(). This function is intended to be called from the
+ * ndo_stop or ndo_open functions on devices that require explicit address (or
+ * references on it) add/remove notifications. If the unsync function pointer
+ * is NULL then this function can be used to just reset the sync_cnt for the
+ * addresses in the list.
+ **/
+void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list,
+ struct net_device *dev,
+ int (*unsync)(struct net_device *,
+ const unsigned char *, int))
+{
+ struct netdev_hw_addr *ha, *tmp;
+
+ list_for_each_entry_safe(ha, tmp, &list->list, list) {
+ if (!ha->sync_cnt)
+ continue;
+
+ /* if fails defer unsyncing address */
+ if (unsync && unsync(dev, ha->addr, ha->sync_cnt))
+ continue;
+
+ ha->refcount -= ha->sync_cnt - 1;
+ ha->sync_cnt = 0;
+ __hw_addr_del_entry(list, ha, false, false);
+ }
+}
+EXPORT_SYMBOL(__hw_addr_ref_unsync_dev);
+
+/**
* __hw_addr_unsync_dev - Remove synchronized addresses from device
* @list: address list to remove synchronized addresses from
* @dev: device to sync
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 90e8aa36881e..da273ec3cc57 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -234,7 +234,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
switch (cmd) {
case SIOCSIFFLAGS: /* Set interface flags */
- return dev_change_flags(dev, ifr->ifr_flags);
+ return dev_change_flags(dev, ifr->ifr_flags, NULL);
case SIOCSIFMETRIC: /* Set the metric on the interface
(currently unused) */
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 3a4b29a13d31..abb0da9d7b4b 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2692,6 +2692,11 @@ static const struct devlink_param devlink_param_generic[] = {
.name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
.type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
},
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
+ .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
+ .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
+ },
};
static int devlink_param_generic_verify(const struct devlink_param *param)
diff --git a/net/core/filter.c b/net/core/filter.c
index 8d2c629501e2..8659b40172d1 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -296,22 +296,18 @@ static u32 convert_skb_access(int skb_field, int dst_reg, int src_reg,
break;
case SKF_AD_VLAN_TAG:
- case SKF_AD_VLAN_TAG_PRESENT:
BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2);
- BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000);
/* dst_reg = *(u16 *) (src_reg + offsetof(vlan_tci)) */
*insn++ = BPF_LDX_MEM(BPF_H, dst_reg, src_reg,
offsetof(struct sk_buff, vlan_tci));
- if (skb_field == SKF_AD_VLAN_TAG) {
- *insn++ = BPF_ALU32_IMM(BPF_AND, dst_reg,
- ~VLAN_TAG_PRESENT);
- } else {
- /* dst_reg >>= 12 */
- *insn++ = BPF_ALU32_IMM(BPF_RSH, dst_reg, 12);
- /* dst_reg &= 1 */
+ break;
+ case SKF_AD_VLAN_TAG_PRESENT:
+ *insn++ = BPF_LDX_MEM(BPF_B, dst_reg, src_reg, PKT_VLAN_PRESENT_OFFSET());
+ if (PKT_VLAN_PRESENT_BIT)
+ *insn++ = BPF_ALU32_IMM(BPF_RSH, dst_reg, PKT_VLAN_PRESENT_BIT);
+ if (PKT_VLAN_PRESENT_BIT < 7)
*insn++ = BPF_ALU32_IMM(BPF_AND, dst_reg, 1);
- }
break;
}
@@ -467,7 +463,8 @@ static bool convert_bpf_ld_abs(struct sock_filter *fp, struct bpf_insn **insnp)
bool ldx_off_ok = offset <= S16_MAX;
*insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_H);
- *insn++ = BPF_ALU64_IMM(BPF_SUB, BPF_REG_TMP, offset);
+ if (offset)
+ *insn++ = BPF_ALU64_IMM(BPF_SUB, BPF_REG_TMP, offset);
*insn++ = BPF_JMP_IMM(BPF_JSLT, BPF_REG_TMP,
size, 2 + endian + (!ldx_off_ok * 2));
if (ldx_off_ok) {
@@ -2428,6 +2425,174 @@ static const struct bpf_func_proto bpf_msg_push_data_proto = {
.arg4_type = ARG_ANYTHING,
};
+static void sk_msg_shift_left(struct sk_msg *msg, int i)
+{
+ int prev;
+
+ do {
+ prev = i;
+ sk_msg_iter_var_next(i);
+ msg->sg.data[prev] = msg->sg.data[i];
+ } while (i != msg->sg.end);
+
+ sk_msg_iter_prev(msg, end);
+}
+
+static void sk_msg_shift_right(struct sk_msg *msg, int i)
+{
+ struct scatterlist tmp, sge;
+
+ sk_msg_iter_next(msg, end);
+ sge = sk_msg_elem_cpy(msg, i);
+ sk_msg_iter_var_next(i);
+ tmp = sk_msg_elem_cpy(msg, i);
+
+ while (i != msg->sg.end) {
+ msg->sg.data[i] = sge;
+ sk_msg_iter_var_next(i);
+ sge = tmp;
+ tmp = sk_msg_elem_cpy(msg, i);
+ }
+}
+
+BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
+ u32, len, u64, flags)
+{
+ u32 i = 0, l, space, offset = 0;
+ u64 last = start + len;
+ int pop;
+
+ if (unlikely(flags))
+ return -EINVAL;
+
+ /* First find the starting scatterlist element */
+ i = msg->sg.start;
+ do {
+ l = sk_msg_elem(msg, i)->length;
+
+ if (start < offset + l)
+ break;
+ offset += l;
+ sk_msg_iter_var_next(i);
+ } while (i != msg->sg.end);
+
+ /* Bounds checks: start and pop must be inside message */
+ if (start >= offset + l || last >= msg->sg.size)
+ return -EINVAL;
+
+ space = MAX_MSG_FRAGS - sk_msg_elem_used(msg);
+
+ pop = len;
+ /* --------------| offset
+ * -| start |-------- len -------|
+ *
+ * |----- a ----|-------- pop -------|----- b ----|
+ * |______________________________________________| length
+ *
+ *
+ * a: region at front of scatter element to save
+ * b: region at back of scatter element to save when length > A + pop
+ * pop: region to pop from element, same as input 'pop' here will be
+ * decremented below per iteration.
+ *
+ * Two top-level cases to handle when start != offset, first B is non
+ * zero and second B is zero corresponding to when a pop includes more
+ * than one element.
+ *
+ * Then if B is non-zero AND there is no space allocate space and
+ * compact A, B regions into page. If there is space shift ring to
+ * the rigth free'ing the next element in ring to place B, leaving
+ * A untouched except to reduce length.
+ */
+ if (start != offset) {
+ struct scatterlist *nsge, *sge = sk_msg_elem(msg, i);
+ int a = start;
+ int b = sge->length - pop - a;
+
+ sk_msg_iter_var_next(i);
+
+ if (pop < sge->length - a) {
+ if (space) {
+ sge->length = a;
+ sk_msg_shift_right(msg, i);
+ nsge = sk_msg_elem(msg, i);
+ get_page(sg_page(sge));
+ sg_set_page(nsge,
+ sg_page(sge),
+ b, sge->offset + pop + a);
+ } else {
+ struct page *page, *orig;
+ u8 *to, *from;
+
+ page = alloc_pages(__GFP_NOWARN |
+ __GFP_COMP | GFP_ATOMIC,
+ get_order(a + b));
+ if (unlikely(!page))
+ return -ENOMEM;
+
+ sge->length = a;
+ orig = sg_page(sge);
+ from = sg_virt(sge);
+ to = page_address(page);
+ memcpy(to, from, a);
+ memcpy(to + a, from + a + pop, b);
+ sg_set_page(sge, page, a + b, 0);
+ put_page(orig);
+ }
+ pop = 0;
+ } else if (pop >= sge->length - a) {
+ sge->length = a;
+ pop -= (sge->length - a);
+ }
+ }
+
+ /* From above the current layout _must_ be as follows,
+ *
+ * -| offset
+ * -| start
+ *
+ * |---- pop ---|---------------- b ------------|
+ * |____________________________________________| length
+ *
+ * Offset and start of the current msg elem are equal because in the
+ * previous case we handled offset != start and either consumed the
+ * entire element and advanced to the next element OR pop == 0.
+ *
+ * Two cases to handle here are first pop is less than the length
+ * leaving some remainder b above. Simply adjust the element's layout
+ * in this case. Or pop >= length of the element so that b = 0. In this
+ * case advance to next element decrementing pop.
+ */
+ while (pop) {
+ struct scatterlist *sge = sk_msg_elem(msg, i);
+
+ if (pop < sge->length) {
+ sge->length -= pop;
+ sge->offset += pop;
+ pop = 0;
+ } else {
+ pop -= sge->length;
+ sk_msg_shift_left(msg, i);
+ }
+ sk_msg_iter_var_next(i);
+ }
+
+ sk_mem_uncharge(msg->sk, len - pop);
+ msg->sg.size -= (len - pop);
+ sk_msg_compute_data_pointers(msg);
+ return 0;
+}
+
+static const struct bpf_func_proto bpf_msg_pop_data_proto = {
+ .func = bpf_msg_pop_data,
+ .gpl_only = false,
+ .ret_type = RET_INTEGER,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_ANYTHING,
+ .arg3_type = ARG_ANYTHING,
+ .arg4_type = ARG_ANYTHING,
+};
+
BPF_CALL_1(bpf_get_cgroup_classid, const struct sk_buff *, skb)
{
return task_get_classid(skb);
@@ -3908,6 +4073,26 @@ static const struct bpf_func_proto bpf_get_socket_uid_proto = {
.arg1_type = ARG_PTR_TO_CTX,
};
+BPF_CALL_5(bpf_sockopt_event_output, struct bpf_sock_ops_kern *, bpf_sock,
+ struct bpf_map *, map, u64, flags, void *, data, u64, size)
+{
+ if (unlikely(flags & ~(BPF_F_INDEX_MASK)))
+ return -EINVAL;
+
+ return bpf_event_output(map, flags, data, size, NULL, 0, NULL);
+}
+
+static const struct bpf_func_proto bpf_sockopt_event_output_proto = {
+ .func = bpf_sockopt_event_output,
+ .gpl_only = true,
+ .ret_type = RET_INTEGER,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_CONST_MAP_PTR,
+ .arg3_type = ARG_ANYTHING,
+ .arg4_type = ARG_PTR_TO_MEM,
+ .arg5_type = ARG_CONST_SIZE_OR_ZERO,
+};
+
BPF_CALL_5(bpf_setsockopt, struct bpf_sock_ops_kern *, bpf_sock,
int, level, int, optname, char *, optval, int, optlen)
{
@@ -4825,37 +5010,31 @@ static const struct bpf_func_proto bpf_lwt_seg6_adjust_srh_proto = {
#ifdef CONFIG_INET
static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
- struct sk_buff *skb, u8 family, u8 proto)
+ int dif, int sdif, u8 family, u8 proto)
{
bool refcounted = false;
struct sock *sk = NULL;
- int dif = 0;
-
- if (skb->dev)
- dif = skb->dev->ifindex;
if (family == AF_INET) {
__be32 src4 = tuple->ipv4.saddr;
__be32 dst4 = tuple->ipv4.daddr;
- int sdif = inet_sdif(skb);
if (proto == IPPROTO_TCP)
- sk = __inet_lookup(net, &tcp_hashinfo, skb, 0,
+ sk = __inet_lookup(net, &tcp_hashinfo, NULL, 0,
src4, tuple->ipv4.sport,
dst4, tuple->ipv4.dport,
dif, sdif, &refcounted);
else
sk = __udp4_lib_lookup(net, src4, tuple->ipv4.sport,
dst4, tuple->ipv4.dport,
- dif, sdif, &udp_table, skb);
+ dif, sdif, &udp_table, NULL);
#if IS_ENABLED(CONFIG_IPV6)
} else {
struct in6_addr *src6 = (struct in6_addr *)&tuple->ipv6.saddr;
struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr;
- int sdif = inet6_sdif(skb);
if (proto == IPPROTO_TCP)
- sk = __inet6_lookup(net, &tcp_hashinfo, skb, 0,
+ sk = __inet6_lookup(net, &tcp_hashinfo, NULL, 0,
src6, tuple->ipv6.sport,
dst6, ntohs(tuple->ipv6.dport),
dif, sdif, &refcounted);
@@ -4864,7 +5043,7 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
src6, tuple->ipv6.sport,
dst6, tuple->ipv6.dport,
dif, sdif,
- &udp_table, skb);
+ &udp_table, NULL);
#endif
}
@@ -4881,31 +5060,33 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
* callers to satisfy BPF_CALL declarations.
*/
static unsigned long
-bpf_sk_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len,
- u8 proto, u64 netns_id, u64 flags)
+__bpf_sk_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len,
+ struct net *caller_net, u32 ifindex, u8 proto, u64 netns_id,
+ u64 flags)
{
- struct net *caller_net;
struct sock *sk = NULL;
u8 family = AF_UNSPEC;
struct net *net;
+ int sdif;
family = len == sizeof(tuple->ipv4) ? AF_INET : AF_INET6;
if (unlikely(family == AF_UNSPEC || flags ||
!((s32)netns_id < 0 || netns_id <= S32_MAX)))
goto out;
- if (skb->dev)
- caller_net = dev_net(skb->dev);
+ if (family == AF_INET)
+ sdif = inet_sdif(skb);
else
- caller_net = sock_net(skb->sk);
+ sdif = inet6_sdif(skb);
+
if ((s32)netns_id < 0) {
net = caller_net;
- sk = sk_lookup(net, tuple, skb, family, proto);
+ sk = sk_lookup(net, tuple, ifindex, sdif, family, proto);
} else {
net = get_net_ns_by_id(caller_net, netns_id);
if (unlikely(!net))
goto out;
- sk = sk_lookup(net, tuple, skb, family, proto);
+ sk = sk_lookup(net, tuple, ifindex, sdif, family, proto);
put_net(net);
}
@@ -4915,6 +5096,25 @@ out:
return (unsigned long) sk;
}
+static unsigned long
+bpf_sk_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len,
+ u8 proto, u64 netns_id, u64 flags)
+{
+ struct net *caller_net;
+ int ifindex;
+
+ if (skb->dev) {
+ caller_net = dev_net(skb->dev);
+ ifindex = skb->dev->ifindex;
+ } else {
+ caller_net = sock_net(skb->sk);
+ ifindex = 0;
+ }
+
+ return __bpf_sk_lookup(skb, tuple, len, caller_net, ifindex,
+ proto, netns_id, flags);
+}
+
BPF_CALL_5(bpf_sk_lookup_tcp, struct sk_buff *, skb,
struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags)
{
@@ -4964,6 +5164,87 @@ static const struct bpf_func_proto bpf_sk_release_proto = {
.ret_type = RET_INTEGER,
.arg1_type = ARG_PTR_TO_SOCKET,
};
+
+BPF_CALL_5(bpf_xdp_sk_lookup_udp, struct xdp_buff *, ctx,
+ struct bpf_sock_tuple *, tuple, u32, len, u32, netns_id, u64, flags)
+{
+ struct net *caller_net = dev_net(ctx->rxq->dev);
+ int ifindex = ctx->rxq->dev->ifindex;
+
+ return __bpf_sk_lookup(NULL, tuple, len, caller_net, ifindex,
+ IPPROTO_UDP, netns_id, flags);
+}
+
+static const struct bpf_func_proto bpf_xdp_sk_lookup_udp_proto = {
+ .func = bpf_xdp_sk_lookup_udp,
+ .gpl_only = false,
+ .pkt_access = true,
+ .ret_type = RET_PTR_TO_SOCKET_OR_NULL,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_PTR_TO_MEM,
+ .arg3_type = ARG_CONST_SIZE,
+ .arg4_type = ARG_ANYTHING,
+ .arg5_type = ARG_ANYTHING,
+};
+
+BPF_CALL_5(bpf_xdp_sk_lookup_tcp, struct xdp_buff *, ctx,
+ struct bpf_sock_tuple *, tuple, u32, len, u32, netns_id, u64, flags)
+{
+ struct net *caller_net = dev_net(ctx->rxq->dev);
+ int ifindex = ctx->rxq->dev->ifindex;
+
+ return __bpf_sk_lookup(NULL, tuple, len, caller_net, ifindex,
+ IPPROTO_TCP, netns_id, flags);
+}
+
+static const struct bpf_func_proto bpf_xdp_sk_lookup_tcp_proto = {
+ .func = bpf_xdp_sk_lookup_tcp,
+ .gpl_only = false,
+ .pkt_access = true,
+ .ret_type = RET_PTR_TO_SOCKET_OR_NULL,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_PTR_TO_MEM,
+ .arg3_type = ARG_CONST_SIZE,
+ .arg4_type = ARG_ANYTHING,
+ .arg5_type = ARG_ANYTHING,
+};
+
+BPF_CALL_5(bpf_sock_addr_sk_lookup_tcp, struct bpf_sock_addr_kern *, ctx,
+ struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags)
+{
+ return __bpf_sk_lookup(NULL, tuple, len, sock_net(ctx->sk), 0,
+ IPPROTO_TCP, netns_id, flags);
+}
+
+static const struct bpf_func_proto bpf_sock_addr_sk_lookup_tcp_proto = {
+ .func = bpf_sock_addr_sk_lookup_tcp,
+ .gpl_only = false,
+ .ret_type = RET_PTR_TO_SOCKET_OR_NULL,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_PTR_TO_MEM,
+ .arg3_type = ARG_CONST_SIZE,
+ .arg4_type = ARG_ANYTHING,
+ .arg5_type = ARG_ANYTHING,
+};
+
+BPF_CALL_5(bpf_sock_addr_sk_lookup_udp, struct bpf_sock_addr_kern *, ctx,
+ struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags)
+{
+ return __bpf_sk_lookup(NULL, tuple, len, sock_net(ctx->sk), 0,
+ IPPROTO_UDP, netns_id, flags);
+}
+
+static const struct bpf_func_proto bpf_sock_addr_sk_lookup_udp_proto = {
+ .func = bpf_sock_addr_sk_lookup_udp,
+ .gpl_only = false,
+ .ret_type = RET_PTR_TO_SOCKET_OR_NULL,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_PTR_TO_MEM,
+ .arg3_type = ARG_CONST_SIZE,
+ .arg4_type = ARG_ANYTHING,
+ .arg5_type = ARG_ANYTHING,
+};
+
#endif /* CONFIG_INET */
bool bpf_helper_changes_pkt_data(void *func)
@@ -4986,6 +5267,7 @@ bool bpf_helper_changes_pkt_data(void *func)
func == bpf_xdp_adjust_meta ||
func == bpf_msg_pull_data ||
func == bpf_msg_push_data ||
+ func == bpf_msg_pop_data ||
func == bpf_xdp_adjust_tail ||
#if IS_ENABLED(CONFIG_IPV6_SEG6_BPF)
func == bpf_lwt_seg6_store_bytes ||
@@ -5070,6 +5352,14 @@ sock_addr_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_get_socket_cookie_sock_addr_proto;
case BPF_FUNC_get_local_storage:
return &bpf_get_local_storage_proto;
+#ifdef CONFIG_INET
+ case BPF_FUNC_sk_lookup_tcp:
+ return &bpf_sock_addr_sk_lookup_tcp_proto;
+ case BPF_FUNC_sk_lookup_udp:
+ return &bpf_sock_addr_sk_lookup_udp_proto;
+ case BPF_FUNC_sk_release:
+ return &bpf_sk_release_proto;
+#endif /* CONFIG_INET */
default:
return bpf_base_func_proto(func_id);
}
@@ -5214,6 +5504,14 @@ xdp_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_xdp_adjust_tail_proto;
case BPF_FUNC_fib_lookup:
return &bpf_xdp_fib_lookup_proto;
+#ifdef CONFIG_INET
+ case BPF_FUNC_sk_lookup_udp:
+ return &bpf_xdp_sk_lookup_udp_proto;
+ case BPF_FUNC_sk_lookup_tcp:
+ return &bpf_xdp_sk_lookup_tcp_proto;
+ case BPF_FUNC_sk_release:
+ return &bpf_sk_release_proto;
+#endif
default:
return bpf_base_func_proto(func_id);
}
@@ -5240,6 +5538,8 @@ sock_ops_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_get_socket_cookie_sock_ops_proto;
case BPF_FUNC_get_local_storage:
return &bpf_get_local_storage_proto;
+ case BPF_FUNC_perf_event_output:
+ return &bpf_sockopt_event_output_proto;
default:
return bpf_base_func_proto(func_id);
}
@@ -5264,6 +5564,8 @@ sk_msg_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_msg_pull_data_proto;
case BPF_FUNC_msg_push_data:
return &bpf_msg_push_data_proto;
+ case BPF_FUNC_msg_pop_data:
+ return &bpf_msg_pop_data_proto;
default:
return bpf_base_func_proto(func_id);
}
@@ -5440,6 +5742,10 @@ static bool bpf_skb_is_valid_access(int off, int size, enum bpf_access_type type
if (size != sizeof(__u64))
return false;
break;
+ case bpf_ctx_range(struct __sk_buff, tstamp):
+ if (size != sizeof(__u64))
+ return false;
+ break;
default:
/* Only narrow read access allowed for now. */
if (type == BPF_WRITE) {
@@ -5467,6 +5773,7 @@ static bool sk_filter_is_valid_access(int off, int size,
case bpf_ctx_range(struct __sk_buff, data_end):
case bpf_ctx_range_ptr(struct __sk_buff, flow_keys):
case bpf_ctx_range_till(struct __sk_buff, family, local_port):
+ case bpf_ctx_range(struct __sk_buff, tstamp):
return false;
}
@@ -5505,6 +5812,10 @@ static bool cg_skb_is_valid_access(int off, int size,
case bpf_ctx_range(struct __sk_buff, priority):
case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]):
break;
+ case bpf_ctx_range(struct __sk_buff, tstamp):
+ if (!capable(CAP_SYS_ADMIN))
+ return false;
+ break;
default:
return false;
}
@@ -5532,6 +5843,7 @@ static bool lwt_is_valid_access(int off, int size,
case bpf_ctx_range_till(struct __sk_buff, family, local_port):
case bpf_ctx_range(struct __sk_buff, data_meta):
case bpf_ctx_range_ptr(struct __sk_buff, flow_keys):
+ case bpf_ctx_range(struct __sk_buff, tstamp):
return false;
}
@@ -5741,6 +6053,7 @@ static bool tc_cls_act_is_valid_access(int off, int size,
case bpf_ctx_range(struct __sk_buff, priority):
case bpf_ctx_range(struct __sk_buff, tc_classid):
case bpf_ctx_range_till(struct __sk_buff, cb[0], cb[4]):
+ case bpf_ctx_range(struct __sk_buff, tstamp):
break;
default:
return false;
@@ -5960,6 +6273,7 @@ static bool sk_skb_is_valid_access(int off, int size,
case bpf_ctx_range(struct __sk_buff, tc_classid):
case bpf_ctx_range(struct __sk_buff, data_meta):
case bpf_ctx_range_ptr(struct __sk_buff, flow_keys):
+ case bpf_ctx_range(struct __sk_buff, tstamp):
return false;
}
@@ -6046,6 +6360,7 @@ static bool flow_dissector_is_valid_access(int off, int size,
case bpf_ctx_range(struct __sk_buff, tc_classid):
case bpf_ctx_range(struct __sk_buff, data_meta):
case bpf_ctx_range_till(struct __sk_buff, family, local_port):
+ case bpf_ctx_range(struct __sk_buff, tstamp):
return false;
}
@@ -6140,19 +6455,19 @@ static u32 bpf_convert_ctx_access(enum bpf_access_type type,
break;
case offsetof(struct __sk_buff, vlan_present):
- case offsetof(struct __sk_buff, vlan_tci):
- BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000);
+ *target_size = 1;
+ *insn++ = BPF_LDX_MEM(BPF_B, si->dst_reg, si->src_reg,
+ PKT_VLAN_PRESENT_OFFSET());
+ if (PKT_VLAN_PRESENT_BIT)
+ *insn++ = BPF_ALU32_IMM(BPF_RSH, si->dst_reg, PKT_VLAN_PRESENT_BIT);
+ if (PKT_VLAN_PRESENT_BIT < 7)
+ *insn++ = BPF_ALU32_IMM(BPF_AND, si->dst_reg, 1);
+ break;
+ case offsetof(struct __sk_buff, vlan_tci):
*insn++ = BPF_LDX_MEM(BPF_H, si->dst_reg, si->src_reg,
bpf_target_off(struct sk_buff, vlan_tci, 2,
target_size));
- if (si->off == offsetof(struct __sk_buff, vlan_tci)) {
- *insn++ = BPF_ALU32_IMM(BPF_AND, si->dst_reg,
- ~VLAN_TAG_PRESENT);
- } else {
- *insn++ = BPF_ALU32_IMM(BPF_RSH, si->dst_reg, 12);
- *insn++ = BPF_ALU32_IMM(BPF_AND, si->dst_reg, 1);
- }
break;
case offsetof(struct __sk_buff, cb[0]) ...
@@ -6355,6 +6670,22 @@ static u32 bpf_convert_ctx_access(enum bpf_access_type type,
*insn++ = BPF_LDX_MEM(BPF_SIZEOF(void *), si->dst_reg,
si->src_reg, off);
break;
+
+ case offsetof(struct __sk_buff, tstamp):
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, tstamp) != 8);
+
+ if (type == BPF_WRITE)
+ *insn++ = BPF_STX_MEM(BPF_DW,
+ si->dst_reg, si->src_reg,
+ bpf_target_off(struct sk_buff,
+ tstamp, 8,
+ target_size));
+ else
+ *insn++ = BPF_LDX_MEM(BPF_DW,
+ si->dst_reg, si->src_reg,
+ bpf_target_off(struct sk_buff,
+ tstamp, 8,
+ target_size));
}
return insn - insn_buf;
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 588f475019d4..2e8d91e54179 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -952,8 +952,7 @@ proto_again:
if (!vlan) {
key_vlan->vlan_id = skb_vlan_tag_get_id(skb);
- key_vlan->vlan_priority =
- (skb_vlan_tag_get_prio(skb) >> VLAN_PRIO_SHIFT);
+ key_vlan->vlan_priority = skb_vlan_tag_get_prio(skb);
} else {
key_vlan->vlan_id = ntohs(vlan->h_vlan_TCI) &
VLAN_VID_MASK;
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 41954e42a2de..c3b58712e98b 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -118,6 +118,34 @@ unsigned long neigh_rand_reach_time(unsigned long base)
}
EXPORT_SYMBOL(neigh_rand_reach_time);
+static void neigh_mark_dead(struct neighbour *n)
+{
+ n->dead = 1;
+ if (!list_empty(&n->gc_list)) {
+ list_del_init(&n->gc_list);
+ atomic_dec(&n->tbl->gc_entries);
+ }
+}
+
+static void neigh_change_state(struct neighbour *n, u8 new)
+{
+ bool on_gc_list = !list_empty(&n->gc_list);
+ bool new_is_perm = new & NUD_PERMANENT;
+
+ n->nud_state = new;
+
+ /* remove from the gc list if new state is permanent;
+ * add to the gc list if new state is not permanent
+ */
+ if (new_is_perm && on_gc_list) {
+ list_del_init(&n->gc_list);
+ atomic_dec(&n->tbl->gc_entries);
+ } else if (!new_is_perm && !on_gc_list) {
+ /* add entries to the tail; cleaning removes from the front */
+ list_add_tail(&n->gc_list, &n->tbl->gc_list);
+ atomic_inc(&n->tbl->gc_entries);
+ }
+}
static bool neigh_del(struct neighbour *n, __u8 state, __u8 flags,
struct neighbour __rcu **np, struct neigh_table *tbl)
@@ -132,7 +160,7 @@ static bool neigh_del(struct neighbour *n, __u8 state, __u8 flags,
neigh = rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock));
rcu_assign_pointer(*np, neigh);
- n->dead = 1;
+ neigh_mark_dead(n);
retval = true;
}
write_unlock(&n->lock);
@@ -166,32 +194,31 @@ bool neigh_remove_one(struct neighbour *ndel, struct neigh_table *tbl)
static int neigh_forced_gc(struct neigh_table *tbl)
{
+ int max_clean = atomic_read(&tbl->gc_entries) - tbl->gc_thresh2;
+ unsigned long tref = jiffies - 5 * HZ;
+ u8 flags = NTF_EXT_LEARNED;
+ struct neighbour *n, *tmp;
+ u8 state = NUD_PERMANENT;
int shrunk = 0;
- int i;
- struct neigh_hash_table *nht;
NEIGH_CACHE_STAT_INC(tbl, forced_gc_runs);
write_lock_bh(&tbl->lock);
- nht = rcu_dereference_protected(tbl->nht,
- lockdep_is_held(&tbl->lock));
- for (i = 0; i < (1 << nht->hash_shift); i++) {
- struct neighbour *n;
- struct neighbour __rcu **np;
- np = &nht->hash_buckets[i];
- while ((n = rcu_dereference_protected(*np,
- lockdep_is_held(&tbl->lock))) != NULL) {
- /* Neighbour record may be discarded if:
- * - nobody refers to it.
- * - it is not permanent
- */
- if (neigh_del(n, NUD_PERMANENT, NTF_EXT_LEARNED, np,
- tbl)) {
- shrunk = 1;
- continue;
- }
- np = &n->next;
+ list_for_each_entry_safe(n, tmp, &tbl->gc_list, gc_list) {
+ if (refcount_read(&n->refcnt) == 1) {
+ bool remove = false;
+
+ write_lock(&n->lock);
+ if (!(n->nud_state & state) && !(n->flags & flags) &&
+ time_after(tref, n->updated))
+ remove = true;
+ write_unlock(&n->lock);
+
+ if (remove && neigh_remove_one(n, tbl))
+ shrunk++;
+ if (shrunk >= max_clean)
+ break;
}
}
@@ -260,8 +287,7 @@ static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev,
lockdep_is_held(&tbl->lock)));
write_lock(&n->lock);
neigh_del_timer(n);
- n->dead = 1;
-
+ neigh_mark_dead(n);
if (refcount_read(&n->refcnt) != 1) {
/* The most unpleasant situation.
We must destroy neighbour entry,
@@ -321,13 +347,18 @@ int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
}
EXPORT_SYMBOL(neigh_ifdown);
-static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device *dev)
+static struct neighbour *neigh_alloc(struct neigh_table *tbl,
+ struct net_device *dev,
+ bool permanent)
{
struct neighbour *n = NULL;
unsigned long now = jiffies;
int entries;
- entries = atomic_inc_return(&tbl->entries) - 1;
+ if (permanent)
+ goto do_alloc;
+
+ entries = atomic_inc_return(&tbl->gc_entries) - 1;
if (entries >= tbl->gc_thresh3 ||
(entries >= tbl->gc_thresh2 &&
time_after(now, tbl->last_flush + 5 * HZ))) {
@@ -340,6 +371,7 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device
}
}
+do_alloc:
n = kzalloc(tbl->entry_size + dev->neigh_priv_len, GFP_ATOMIC);
if (!n)
goto out_entries;
@@ -358,11 +390,19 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device
n->tbl = tbl;
refcount_set(&n->refcnt, 1);
n->dead = 1;
+
+ if (!permanent)
+ list_add_tail(&n->gc_list, &n->tbl->gc_list);
+ else
+ INIT_LIST_HEAD(&n->gc_list);
+
+ atomic_inc(&tbl->entries);
out:
return n;
out_entries:
- atomic_dec(&tbl->entries);
+ if (!permanent)
+ atomic_dec(&tbl->gc_entries);
goto out;
}
@@ -505,13 +545,15 @@ struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
}
EXPORT_SYMBOL(neigh_lookup_nodev);
-struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
- struct net_device *dev, bool want_ref)
+static struct neighbour *___neigh_create(struct neigh_table *tbl,
+ const void *pkey,
+ struct net_device *dev,
+ bool permanent, bool want_ref)
{
+ struct neighbour *n1, *rc, *n = neigh_alloc(tbl, dev, permanent);
u32 hash_val;
unsigned int key_len = tbl->key_len;
int error;
- struct neighbour *n1, *rc, *n = neigh_alloc(tbl, dev);
struct neigh_hash_table *nht;
if (!n) {
@@ -591,6 +633,12 @@ out_neigh_release:
neigh_release(n);
goto out;
}
+
+struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
+ struct net_device *dev, bool want_ref)
+{
+ return ___neigh_create(tbl, pkey, dev, false, want_ref);
+}
EXPORT_SYMBOL(__neigh_create);
static u32 pneigh_hash(const void *pkey, unsigned int key_len)
@@ -854,7 +902,7 @@ static void neigh_periodic_work(struct work_struct *work)
(state == NUD_FAILED ||
time_after(jiffies, n->used + NEIGH_VAR(n->parms, GC_STALETIME)))) {
*np = n->next;
- n->dead = 1;
+ neigh_mark_dead(n);
write_unlock(&n->lock);
neigh_cleanup_and_release(n);
continue;
@@ -1137,8 +1185,9 @@ static void neigh_update_hhs(struct neighbour *neigh)
Caller MUST hold reference count on the entry.
*/
-int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
- u32 flags, u32 nlmsg_pid)
+static int __neigh_update(struct neighbour *neigh, const u8 *lladdr,
+ u8 new, u32 flags, u32 nlmsg_pid,
+ struct netlink_ext_ack *extack)
{
u8 old;
int err;
@@ -1155,8 +1204,10 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
(old & (NUD_NOARP | NUD_PERMANENT)))
goto out;
- if (neigh->dead)
+ if (neigh->dead) {
+ NL_SET_ERR_MSG(extack, "Neighbor entry is now dead");
goto out;
+ }
neigh_update_ext_learned(neigh, flags, &notify);
@@ -1164,7 +1215,7 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
neigh_del_timer(neigh);
if (old & NUD_CONNECTED)
neigh_suspect(neigh);
- neigh->nud_state = new;
+ neigh_change_state(neigh, new);
err = 0;
notify = old & NUD_VALID;
if ((old & (NUD_INCOMPLETE | NUD_PROBE)) &&
@@ -1193,8 +1244,10 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
use it, otherwise discard the request.
*/
err = -EINVAL;
- if (!(old & NUD_VALID))
+ if (!(old & NUD_VALID)) {
+ NL_SET_ERR_MSG(extack, "No link layer address given");
goto out;
+ }
lladdr = neigh->ha;
}
@@ -1241,7 +1294,7 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
((new & NUD_REACHABLE) ?
neigh->parms->reachable_time :
0)));
- neigh->nud_state = new;
+ neigh_change_state(neigh, new);
notify = 1;
}
@@ -1307,6 +1360,12 @@ out:
return err;
}
+
+int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+ u32 flags, u32 nlmsg_pid)
+{
+ return __neigh_update(neigh, lladdr, new, flags, nlmsg_pid, NULL);
+}
EXPORT_SYMBOL(neigh_update);
/* Update the neigh to listen temporarily for probe responses, even if it is
@@ -1571,6 +1630,7 @@ void neigh_table_init(int index, struct neigh_table *tbl)
unsigned long phsize;
INIT_LIST_HEAD(&tbl->parms_list);
+ INIT_LIST_HEAD(&tbl->gc_list);
list_add(&tbl->parms.list, &tbl->parms_list);
write_pnet(&tbl->parms.net, &init_net);
refcount_set(&tbl->parms.refcnt, 1);
@@ -1678,8 +1738,10 @@ static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
dst_attr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_DST);
- if (dst_attr == NULL)
+ if (!dst_attr) {
+ NL_SET_ERR_MSG(extack, "Network address not specified");
goto out;
+ }
ndm = nlmsg_data(nlh);
if (ndm->ndm_ifindex) {
@@ -1694,8 +1756,10 @@ static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh,
if (tbl == NULL)
return -EAFNOSUPPORT;
- if (nla_len(dst_attr) < (int)tbl->key_len)
+ if (nla_len(dst_attr) < (int)tbl->key_len) {
+ NL_SET_ERR_MSG(extack, "Invalid network address");
goto out;
+ }
if (ndm->ndm_flags & NTF_PROXY) {
err = pneigh_delete(tbl, net, nla_data(dst_attr), dev);
@@ -1711,10 +1775,9 @@ static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
}
- err = neigh_update(neigh, NULL, NUD_FAILED,
- NEIGH_UPDATE_F_OVERRIDE |
- NEIGH_UPDATE_F_ADMIN,
- NETLINK_CB(skb).portid);
+ err = __neigh_update(neigh, NULL, NUD_FAILED,
+ NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_ADMIN,
+ NETLINK_CB(skb).portid, extack);
write_lock_bh(&tbl->lock);
neigh_release(neigh);
neigh_remove_one(neigh, tbl);
@@ -1744,8 +1807,10 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
err = -EINVAL;
- if (tb[NDA_DST] == NULL)
+ if (!tb[NDA_DST]) {
+ NL_SET_ERR_MSG(extack, "Network address not specified");
goto out;
+ }
ndm = nlmsg_data(nlh);
if (ndm->ndm_ifindex) {
@@ -1755,16 +1820,21 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
}
- if (tb[NDA_LLADDR] && nla_len(tb[NDA_LLADDR]) < dev->addr_len)
+ if (tb[NDA_LLADDR] && nla_len(tb[NDA_LLADDR]) < dev->addr_len) {
+ NL_SET_ERR_MSG(extack, "Invalid link address");
goto out;
+ }
}
tbl = neigh_find_table(ndm->ndm_family);
if (tbl == NULL)
return -EAFNOSUPPORT;
- if (nla_len(tb[NDA_DST]) < (int)tbl->key_len)
+ if (nla_len(tb[NDA_DST]) < (int)tbl->key_len) {
+ NL_SET_ERR_MSG(extack, "Invalid network address");
goto out;
+ }
+
dst = nla_data(tb[NDA_DST]);
lladdr = tb[NDA_LLADDR] ? nla_data(tb[NDA_LLADDR]) : NULL;
@@ -1780,8 +1850,10 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
}
- if (dev == NULL)
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device not specified");
goto out;
+ }
neigh = neigh_lookup(tbl, dst, dev);
if (neigh == NULL) {
@@ -1790,7 +1862,9 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
}
- neigh = __neigh_lookup_errno(tbl, dst, dev);
+ neigh = ___neigh_create(tbl, dst, dev,
+ ndm->ndm_state & NUD_PERMANENT,
+ true);
if (IS_ERR(neigh)) {
err = PTR_ERR(neigh);
goto out;
@@ -1817,8 +1891,8 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
neigh_event_send(neigh, NULL);
err = 0;
} else
- err = neigh_update(neigh, lladdr, ndm->ndm_state, flags,
- NETLINK_CB(skb).portid);
+ err = __neigh_update(neigh, lladdr, ndm->ndm_state, flags,
+ NETLINK_CB(skb).portid, extack);
neigh_release(neigh);
out:
@@ -2631,7 +2705,7 @@ void __neigh_for_each_release(struct neigh_table *tbl,
rcu_assign_pointer(*np,
rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock)));
- n->dead = 1;
+ neigh_mark_dead(n);
} else
np = &n->next;
write_unlock(&n->lock);
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index bd67c4d0fcfd..ff9fd2bb4ce4 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -337,7 +337,7 @@ NETDEVICE_SHOW_RW(mtu, fmt_dec);
static int change_flags(struct net_device *dev, unsigned long new_flags)
{
- return dev_change_flags(dev, (unsigned int)new_flags);
+ return dev_change_flags(dev, (unsigned int)new_flags, NULL);
}
static ssize_t flags_store(struct device *dev, struct device_attribute *attr,
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index fefe72774aeb..05b23b285058 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -669,6 +669,7 @@ static const struct nla_policy rtnl_net_policy[NETNSA_MAX + 1] = {
[NETNSA_NSID] = { .type = NLA_S32 },
[NETNSA_PID] = { .type = NLA_U32 },
[NETNSA_FD] = { .type = NLA_U32 },
+ [NETNSA_TARGET_NSID] = { .type = NLA_S32 },
};
static int rtnl_net_newid(struct sk_buff *skb, struct nlmsghdr *nlh,
@@ -735,23 +736,38 @@ static int rtnl_net_get_size(void)
{
return NLMSG_ALIGN(sizeof(struct rtgenmsg))
+ nla_total_size(sizeof(s32)) /* NETNSA_NSID */
+ + nla_total_size(sizeof(s32)) /* NETNSA_CURRENT_NSID */
;
}
-static int rtnl_net_fill(struct sk_buff *skb, u32 portid, u32 seq, int flags,
- int cmd, struct net *net, int nsid)
+struct net_fill_args {
+ u32 portid;
+ u32 seq;
+ int flags;
+ int cmd;
+ int nsid;
+ bool add_ref;
+ int ref_nsid;
+};
+
+static int rtnl_net_fill(struct sk_buff *skb, struct net_fill_args *args)
{
struct nlmsghdr *nlh;
struct rtgenmsg *rth;
- nlh = nlmsg_put(skb, portid, seq, cmd, sizeof(*rth), flags);
+ nlh = nlmsg_put(skb, args->portid, args->seq, args->cmd, sizeof(*rth),
+ args->flags);
if (!nlh)
return -EMSGSIZE;
rth = nlmsg_data(nlh);
rth->rtgen_family = AF_UNSPEC;
- if (nla_put_s32(skb, NETNSA_NSID, nsid))
+ if (nla_put_s32(skb, NETNSA_NSID, args->nsid))
+ goto nla_put_failure;
+
+ if (args->add_ref &&
+ nla_put_s32(skb, NETNSA_CURRENT_NSID, args->ref_nsid))
goto nla_put_failure;
nlmsg_end(skb, nlh);
@@ -767,10 +783,15 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh,
{
struct net *net = sock_net(skb->sk);
struct nlattr *tb[NETNSA_MAX + 1];
+ struct net_fill_args fillargs = {
+ .portid = NETLINK_CB(skb).portid,
+ .seq = nlh->nlmsg_seq,
+ .cmd = RTM_NEWNSID,
+ };
+ struct net *peer, *target = net;
struct nlattr *nla;
struct sk_buff *msg;
- struct net *peer;
- int err, id;
+ int err;
err = nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX,
rtnl_net_policy, extack);
@@ -782,6 +803,11 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh,
} else if (tb[NETNSA_FD]) {
peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD]));
nla = tb[NETNSA_FD];
+ } else if (tb[NETNSA_NSID]) {
+ peer = get_net_ns_by_id(net, nla_get_u32(tb[NETNSA_NSID]));
+ if (!peer)
+ peer = ERR_PTR(-ENOENT);
+ nla = tb[NETNSA_NSID];
} else {
NL_SET_ERR_MSG(extack, "Peer netns reference is missing");
return -EINVAL;
@@ -793,15 +819,29 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh,
return PTR_ERR(peer);
}
+ if (tb[NETNSA_TARGET_NSID]) {
+ int id = nla_get_s32(tb[NETNSA_TARGET_NSID]);
+
+ target = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, id);
+ if (IS_ERR(target)) {
+ NL_SET_BAD_ATTR(extack, tb[NETNSA_TARGET_NSID]);
+ NL_SET_ERR_MSG(extack,
+ "Target netns reference is invalid");
+ err = PTR_ERR(target);
+ goto out;
+ }
+ fillargs.add_ref = true;
+ fillargs.ref_nsid = peernet2id(net, peer);
+ }
+
msg = nlmsg_new(rtnl_net_get_size(), GFP_KERNEL);
if (!msg) {
err = -ENOMEM;
goto out;
}
- id = peernet2id(net, peer);
- err = rtnl_net_fill(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0,
- RTM_NEWNSID, net, id);
+ fillargs.nsid = peernet2id(target, peer);
+ err = rtnl_net_fill(msg, &fillargs);
if (err < 0)
goto err_out;
@@ -811,14 +851,17 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh,
err_out:
nlmsg_free(msg);
out:
+ if (fillargs.add_ref)
+ put_net(target);
put_net(peer);
return err;
}
struct rtnl_net_dump_cb {
- struct net *net;
+ struct net *tgt_net;
+ struct net *ref_net;
struct sk_buff *skb;
- struct netlink_callback *cb;
+ struct net_fill_args fillargs;
int idx;
int s_idx;
};
@@ -831,9 +874,10 @@ static int rtnl_net_dumpid_one(int id, void *peer, void *data)
if (net_cb->idx < net_cb->s_idx)
goto cont;
- ret = rtnl_net_fill(net_cb->skb, NETLINK_CB(net_cb->cb->skb).portid,
- net_cb->cb->nlh->nlmsg_seq, NLM_F_MULTI,
- RTM_NEWNSID, net_cb->net, id);
+ net_cb->fillargs.nsid = id;
+ if (net_cb->fillargs.add_ref)
+ net_cb->fillargs.ref_nsid = __peernet2id(net_cb->ref_net, peer);
+ ret = rtnl_net_fill(net_cb->skb, &net_cb->fillargs);
if (ret < 0)
return ret;
@@ -842,33 +886,96 @@ cont:
return 0;
}
+static int rtnl_valid_dump_net_req(const struct nlmsghdr *nlh, struct sock *sk,
+ struct rtnl_net_dump_cb *net_cb,
+ struct netlink_callback *cb)
+{
+ struct netlink_ext_ack *extack = cb->extack;
+ struct nlattr *tb[NETNSA_MAX + 1];
+ int err, i;
+
+ err = nlmsg_parse_strict(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX,
+ rtnl_net_policy, extack);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i <= NETNSA_MAX; i++) {
+ if (!tb[i])
+ continue;
+
+ if (i == NETNSA_TARGET_NSID) {
+ struct net *net;
+
+ net = rtnl_get_net_ns_capable(sk, nla_get_s32(tb[i]));
+ if (IS_ERR(net)) {
+ NL_SET_BAD_ATTR(extack, tb[i]);
+ NL_SET_ERR_MSG(extack,
+ "Invalid target network namespace id");
+ return PTR_ERR(net);
+ }
+ net_cb->fillargs.add_ref = true;
+ net_cb->ref_net = net_cb->tgt_net;
+ net_cb->tgt_net = net;
+ } else {
+ NL_SET_BAD_ATTR(extack, tb[i]);
+ NL_SET_ERR_MSG(extack,
+ "Unsupported attribute in dump request");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static int rtnl_net_dumpid(struct sk_buff *skb, struct netlink_callback *cb)
{
- struct net *net = sock_net(skb->sk);
struct rtnl_net_dump_cb net_cb = {
- .net = net,
+ .tgt_net = sock_net(skb->sk),
.skb = skb,
- .cb = cb,
+ .fillargs = {
+ .portid = NETLINK_CB(cb->skb).portid,
+ .seq = cb->nlh->nlmsg_seq,
+ .flags = NLM_F_MULTI,
+ .cmd = RTM_NEWNSID,
+ },
.idx = 0,
.s_idx = cb->args[0],
};
+ int err = 0;
- if (cb->strict_check &&
- nlmsg_attrlen(cb->nlh, sizeof(struct rtgenmsg))) {
- NL_SET_ERR_MSG(cb->extack, "Unknown data in network namespace id dump request");
- return -EINVAL;
+ if (cb->strict_check) {
+ err = rtnl_valid_dump_net_req(cb->nlh, skb->sk, &net_cb, cb);
+ if (err < 0)
+ goto end;
}
- spin_lock_bh(&net->nsid_lock);
- idr_for_each(&net->netns_ids, rtnl_net_dumpid_one, &net_cb);
- spin_unlock_bh(&net->nsid_lock);
+ spin_lock_bh(&net_cb.tgt_net->nsid_lock);
+ if (net_cb.fillargs.add_ref &&
+ !net_eq(net_cb.ref_net, net_cb.tgt_net) &&
+ !spin_trylock_bh(&net_cb.ref_net->nsid_lock)) {
+ spin_unlock_bh(&net_cb.tgt_net->nsid_lock);
+ err = -EAGAIN;
+ goto end;
+ }
+ idr_for_each(&net_cb.tgt_net->netns_ids, rtnl_net_dumpid_one, &net_cb);
+ if (net_cb.fillargs.add_ref &&
+ !net_eq(net_cb.ref_net, net_cb.tgt_net))
+ spin_unlock_bh(&net_cb.ref_net->nsid_lock);
+ spin_unlock_bh(&net_cb.tgt_net->nsid_lock);
cb->args[0] = net_cb.idx;
- return skb->len;
+end:
+ if (net_cb.fillargs.add_ref)
+ put_net(net_cb.tgt_net);
+ return err < 0 ? err : skb->len;
}
static void rtnl_net_notifyid(struct net *net, int cmd, int id)
{
+ struct net_fill_args fillargs = {
+ .cmd = cmd,
+ .nsid = id,
+ };
struct sk_buff *msg;
int err = -ENOMEM;
@@ -876,7 +983,7 @@ static void rtnl_net_notifyid(struct net *net, int cmd, int id)
if (!msg)
goto out;
- err = rtnl_net_fill(msg, 0, 0, 0, cmd, net, id);
+ err = rtnl_net_fill(msg, &fillargs);
if (err < 0)
goto err_out;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 2b9fdbc43205..36a2b63ffd6d 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -663,7 +663,7 @@ int netpoll_setup(struct netpoll *np)
np_info(np, "device %s not up yet, forcing it\n", np->dev_name);
- err = dev_open(ndev);
+ err = dev_open(ndev, NULL);
if (err) {
np_err(np, "failed to open %s\n", ndev->name);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 7819f7804eeb..c9c0407a7ee0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -59,7 +59,7 @@
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
-#define RTNL_MAX_TYPE 49
+#define RTNL_MAX_TYPE 50
#define RTNL_SLAVE_MAX_TYPE 36
struct rtnl_link {
@@ -2489,7 +2489,8 @@ static int do_setlink(const struct sk_buff *skb,
}
if (ifm->ifi_flags || ifm->ifi_change) {
- err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
+ err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm),
+ extack);
if (err < 0)
goto errout;
}
@@ -2870,7 +2871,8 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
old_flags = dev->flags;
if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
- err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
+ err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm),
+ NULL);
if (err < 0)
return err;
}
@@ -2885,9 +2887,11 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
}
EXPORT_SYMBOL(rtnl_configure_link);
-struct net_device *rtnl_create_link(struct net *net,
- const char *ifname, unsigned char name_assign_type,
- const struct rtnl_link_ops *ops, struct nlattr *tb[])
+struct net_device *rtnl_create_link(struct net *net, const char *ifname,
+ unsigned char name_assign_type,
+ const struct rtnl_link_ops *ops,
+ struct nlattr *tb[],
+ struct netlink_ext_ack *extack)
{
struct net_device *dev;
unsigned int num_tx_queues = 1;
@@ -2903,11 +2907,15 @@ struct net_device *rtnl_create_link(struct net *net,
else if (ops->get_num_rx_queues)
num_rx_queues = ops->get_num_rx_queues();
- if (num_tx_queues < 1 || num_tx_queues > 4096)
+ if (num_tx_queues < 1 || num_tx_queues > 4096) {
+ NL_SET_ERR_MSG(extack, "Invalid number of transmit queues");
return ERR_PTR(-EINVAL);
+ }
- if (num_rx_queues < 1 || num_rx_queues > 4096)
+ if (num_rx_queues < 1 || num_rx_queues > 4096) {
+ NL_SET_ERR_MSG(extack, "Invalid number of receive queues");
return ERR_PTR(-EINVAL);
+ }
dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type,
ops->setup, num_tx_queues, num_rx_queues);
@@ -2965,20 +2973,24 @@ static int rtnl_group_changelink(const struct sk_buff *skb,
return 0;
}
-static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
+static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct nlattr **attr, struct netlink_ext_ack *extack)
{
+ struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1];
+ unsigned char name_assign_type = NET_NAME_USER;
+ struct nlattr *linkinfo[IFLA_INFO_MAX + 1];
+ const struct rtnl_link_ops *m_ops = NULL;
+ struct net_device *master_dev = NULL;
struct net *net = sock_net(skb->sk);
const struct rtnl_link_ops *ops;
- const struct rtnl_link_ops *m_ops = NULL;
+ struct nlattr *tb[IFLA_MAX + 1];
+ struct net *dest_net, *link_net;
+ struct nlattr **slave_data;
+ char kind[MODULE_NAME_LEN];
struct net_device *dev;
- struct net_device *master_dev = NULL;
struct ifinfomsg *ifm;
- char kind[MODULE_NAME_LEN];
char ifname[IFNAMSIZ];
- struct nlattr *tb[IFLA_MAX+1];
- struct nlattr *linkinfo[IFLA_INFO_MAX+1];
- unsigned char name_assign_type = NET_NAME_USER;
+ struct nlattr **data;
int err;
#ifdef CONFIG_MODULES
@@ -3034,193 +3046,200 @@ replay:
ops = NULL;
}
- if (1) {
- struct nlattr *attr[RTNL_MAX_TYPE + 1];
- struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1];
- struct nlattr **data = NULL;
- struct nlattr **slave_data = NULL;
- struct net *dest_net, *link_net = NULL;
-
- if (ops) {
- if (ops->maxtype > RTNL_MAX_TYPE)
- return -EINVAL;
+ data = NULL;
+ if (ops) {
+ if (ops->maxtype > RTNL_MAX_TYPE)
+ return -EINVAL;
- if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
- err = nla_parse_nested(attr, ops->maxtype,
- linkinfo[IFLA_INFO_DATA],
- ops->policy, NULL);
- if (err < 0)
- return err;
- data = attr;
- }
- if (ops->validate) {
- err = ops->validate(tb, data, extack);
- if (err < 0)
- return err;
- }
+ if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
+ err = nla_parse_nested(attr, ops->maxtype,
+ linkinfo[IFLA_INFO_DATA],
+ ops->policy, extack);
+ if (err < 0)
+ return err;
+ data = attr;
+ }
+ if (ops->validate) {
+ err = ops->validate(tb, data, extack);
+ if (err < 0)
+ return err;
}
+ }
- if (m_ops) {
- if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)
- return -EINVAL;
+ slave_data = NULL;
+ if (m_ops) {
+ if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)
+ return -EINVAL;
- if (m_ops->slave_maxtype &&
- linkinfo[IFLA_INFO_SLAVE_DATA]) {
- err = nla_parse_nested(slave_attr,
- m_ops->slave_maxtype,
- linkinfo[IFLA_INFO_SLAVE_DATA],
- m_ops->slave_policy,
- NULL);
- if (err < 0)
- return err;
- slave_data = slave_attr;
- }
+ if (m_ops->slave_maxtype &&
+ linkinfo[IFLA_INFO_SLAVE_DATA]) {
+ err = nla_parse_nested(slave_attr, m_ops->slave_maxtype,
+ linkinfo[IFLA_INFO_SLAVE_DATA],
+ m_ops->slave_policy, extack);
+ if (err < 0)
+ return err;
+ slave_data = slave_attr;
}
+ }
- if (dev) {
- int status = 0;
-
- if (nlh->nlmsg_flags & NLM_F_EXCL)
- return -EEXIST;
- if (nlh->nlmsg_flags & NLM_F_REPLACE)
- return -EOPNOTSUPP;
+ if (dev) {
+ int status = 0;
- if (linkinfo[IFLA_INFO_DATA]) {
- if (!ops || ops != dev->rtnl_link_ops ||
- !ops->changelink)
- return -EOPNOTSUPP;
+ if (nlh->nlmsg_flags & NLM_F_EXCL)
+ return -EEXIST;
+ if (nlh->nlmsg_flags & NLM_F_REPLACE)
+ return -EOPNOTSUPP;
- err = ops->changelink(dev, tb, data, extack);
- if (err < 0)
- return err;
- status |= DO_SETLINK_NOTIFY;
- }
+ if (linkinfo[IFLA_INFO_DATA]) {
+ if (!ops || ops != dev->rtnl_link_ops ||
+ !ops->changelink)
+ return -EOPNOTSUPP;
- if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
- if (!m_ops || !m_ops->slave_changelink)
- return -EOPNOTSUPP;
+ err = ops->changelink(dev, tb, data, extack);
+ if (err < 0)
+ return err;
+ status |= DO_SETLINK_NOTIFY;
+ }
- err = m_ops->slave_changelink(master_dev, dev,
- tb, slave_data,
- extack);
- if (err < 0)
- return err;
- status |= DO_SETLINK_NOTIFY;
- }
+ if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
+ if (!m_ops || !m_ops->slave_changelink)
+ return -EOPNOTSUPP;
- return do_setlink(skb, dev, ifm, extack, tb, ifname,
- status);
+ err = m_ops->slave_changelink(master_dev, dev, tb,
+ slave_data, extack);
+ if (err < 0)
+ return err;
+ status |= DO_SETLINK_NOTIFY;
}
- if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
- if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
- return rtnl_group_changelink(skb, net,
+ return do_setlink(skb, dev, ifm, extack, tb, ifname, status);
+ }
+
+ if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
+ if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
+ return rtnl_group_changelink(skb, net,
nla_get_u32(tb[IFLA_GROUP]),
ifm, extack, tb);
- return -ENODEV;
- }
+ return -ENODEV;
+ }
- if (tb[IFLA_MAP] || tb[IFLA_PROTINFO])
- return -EOPNOTSUPP;
+ if (tb[IFLA_MAP] || tb[IFLA_PROTINFO])
+ return -EOPNOTSUPP;
- if (!ops) {
+ if (!ops) {
#ifdef CONFIG_MODULES
- if (kind[0]) {
- __rtnl_unlock();
- request_module("rtnl-link-%s", kind);
- rtnl_lock();
- ops = rtnl_link_ops_get(kind);
- if (ops)
- goto replay;
- }
-#endif
- return -EOPNOTSUPP;
+ if (kind[0]) {
+ __rtnl_unlock();
+ request_module("rtnl-link-%s", kind);
+ rtnl_lock();
+ ops = rtnl_link_ops_get(kind);
+ if (ops)
+ goto replay;
}
+#endif
+ NL_SET_ERR_MSG(extack, "Unknown device type");
+ return -EOPNOTSUPP;
+ }
- if (!ops->setup)
- return -EOPNOTSUPP;
-
- if (!ifname[0]) {
- snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
- name_assign_type = NET_NAME_ENUM;
- }
+ if (!ops->setup)
+ return -EOPNOTSUPP;
- dest_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN);
- if (IS_ERR(dest_net))
- return PTR_ERR(dest_net);
+ if (!ifname[0]) {
+ snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
+ name_assign_type = NET_NAME_ENUM;
+ }
- if (tb[IFLA_LINK_NETNSID]) {
- int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
+ dest_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN);
+ if (IS_ERR(dest_net))
+ return PTR_ERR(dest_net);
- link_net = get_net_ns_by_id(dest_net, id);
- if (!link_net) {
- err = -EINVAL;
- goto out;
- }
- err = -EPERM;
- if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN))
- goto out;
- }
+ if (tb[IFLA_LINK_NETNSID]) {
+ int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
- dev = rtnl_create_link(link_net ? : dest_net, ifname,
- name_assign_type, ops, tb);
- if (IS_ERR(dev)) {
- err = PTR_ERR(dev);
+ link_net = get_net_ns_by_id(dest_net, id);
+ if (!link_net) {
+ NL_SET_ERR_MSG(extack, "Unknown network namespace id");
+ err = -EINVAL;
goto out;
}
+ err = -EPERM;
+ if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN))
+ goto out;
+ } else {
+ link_net = NULL;
+ }
- dev->ifindex = ifm->ifi_index;
+ dev = rtnl_create_link(link_net ? : dest_net, ifname,
+ name_assign_type, ops, tb, extack);
+ if (IS_ERR(dev)) {
+ err = PTR_ERR(dev);
+ goto out;
+ }
- if (ops->newlink) {
- err = ops->newlink(link_net ? : net, dev, tb, data,
- extack);
- /* Drivers should call free_netdev() in ->destructor
- * and unregister it on failure after registration
- * so that device could be finally freed in rtnl_unlock.
- */
- if (err < 0) {
- /* If device is not registered at all, free it now */
- if (dev->reg_state == NETREG_UNINITIALIZED)
- free_netdev(dev);
- goto out;
- }
- } else {
- err = register_netdevice(dev);
- if (err < 0) {
+ dev->ifindex = ifm->ifi_index;
+
+ if (ops->newlink) {
+ err = ops->newlink(link_net ? : net, dev, tb, data, extack);
+ /* Drivers should call free_netdev() in ->destructor
+ * and unregister it on failure after registration
+ * so that device could be finally freed in rtnl_unlock.
+ */
+ if (err < 0) {
+ /* If device is not registered at all, free it now */
+ if (dev->reg_state == NETREG_UNINITIALIZED)
free_netdev(dev);
- goto out;
- }
+ goto out;
+ }
+ } else {
+ err = register_netdevice(dev);
+ if (err < 0) {
+ free_netdev(dev);
+ goto out;
}
- err = rtnl_configure_link(dev, ifm);
+ }
+ err = rtnl_configure_link(dev, ifm);
+ if (err < 0)
+ goto out_unregister;
+ if (link_net) {
+ err = dev_change_net_namespace(dev, dest_net, ifname);
if (err < 0)
goto out_unregister;
- if (link_net) {
- err = dev_change_net_namespace(dev, dest_net, ifname);
- if (err < 0)
- goto out_unregister;
- }
- if (tb[IFLA_MASTER]) {
- err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]),
- extack);
- if (err)
- goto out_unregister;
- }
+ }
+ if (tb[IFLA_MASTER]) {
+ err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack);
+ if (err)
+ goto out_unregister;
+ }
out:
- if (link_net)
- put_net(link_net);
- put_net(dest_net);
- return err;
+ if (link_net)
+ put_net(link_net);
+ put_net(dest_net);
+ return err;
out_unregister:
- if (ops->newlink) {
- LIST_HEAD(list_kill);
+ if (ops->newlink) {
+ LIST_HEAD(list_kill);
- ops->dellink(dev, &list_kill);
- unregister_netdevice_many(&list_kill);
- } else {
- unregister_netdevice(dev);
- }
- goto out;
+ ops->dellink(dev, &list_kill);
+ unregister_netdevice_many(&list_kill);
+ } else {
+ unregister_netdevice(dev);
}
+ goto out;
+}
+
+static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr **attr;
+ int ret;
+
+ attr = kmalloc_array(RTNL_MAX_TYPE + 1, sizeof(*attr), GFP_KERNEL);
+ if (!attr)
+ return -ENOMEM;
+
+ ret = __rtnl_newlink(skb, nlh, attr, extack);
+ kfree(attr);
+ return ret;
}
static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index a8217e221e19..40552547c69a 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1089,7 +1089,7 @@ void sock_zerocopy_put(struct ubuf_info *uarg)
}
EXPORT_SYMBOL_GPL(sock_zerocopy_put);
-void sock_zerocopy_put_abort(struct ubuf_info *uarg)
+void sock_zerocopy_put_abort(struct ubuf_info *uarg, bool have_uref)
{
if (uarg) {
struct sock *sk = skb_from_uarg(uarg)->sk;
@@ -1097,7 +1097,8 @@ void sock_zerocopy_put_abort(struct ubuf_info *uarg)
atomic_dec(&sk->sk_zckey);
uarg->len--;
- sock_zerocopy_put(uarg);
+ if (have_uref)
+ sock_zerocopy_put(uarg);
}
}
EXPORT_SYMBOL_GPL(sock_zerocopy_put_abort);
@@ -1105,6 +1106,12 @@ EXPORT_SYMBOL_GPL(sock_zerocopy_put_abort);
extern int __zerocopy_sg_from_iter(struct sock *sk, struct sk_buff *skb,
struct iov_iter *from, size_t length);
+int skb_zerocopy_iter_dgram(struct sk_buff *skb, struct msghdr *msg, int len)
+{
+ return __zerocopy_sg_from_iter(skb->sk, skb, &msg->msg_iter, len);
+}
+EXPORT_SYMBOL_GPL(skb_zerocopy_iter_dgram);
+
int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
struct msghdr *msg, int len,
struct ubuf_info *uarg)
@@ -1131,7 +1138,7 @@ int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
return err;
}
- skb_zcopy_set(skb, uarg);
+ skb_zcopy_set(skb, uarg, NULL);
return skb->len - orig_len;
}
EXPORT_SYMBOL_GPL(skb_zerocopy_iter_stream);
@@ -1151,7 +1158,7 @@ static int skb_zerocopy_clone(struct sk_buff *nskb, struct sk_buff *orig,
if (skb_copy_ubufs(nskb, GFP_ATOMIC))
return -EIO;
}
- skb_zcopy_set(nskb, skb_uarg(orig));
+ skb_zcopy_set(nskb, skb_uarg(orig), NULL);
}
return 0;
}
@@ -1925,8 +1932,6 @@ void *__pskb_pull_tail(struct sk_buff *skb, int delta)
struct sk_buff *insp = NULL;
do {
- BUG_ON(!list);
-
if (list->len <= eat) {
/* Eaten as whole. */
eat -= list->len;
@@ -2366,19 +2371,6 @@ error:
}
EXPORT_SYMBOL_GPL(skb_send_sock_locked);
-/* Send skb data on a socket. */
-int skb_send_sock(struct sock *sk, struct sk_buff *skb, int offset, int len)
-{
- int ret = 0;
-
- lock_sock(sk);
- ret = skb_send_sock_locked(sk, skb, offset, len);
- release_sock(sk);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(skb_send_sock);
-
/**
* skb_store_bits - store bits from kernel buffer to skb
* @skb: destination buffer
@@ -2645,6 +2637,65 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
}
EXPORT_SYMBOL(skb_copy_and_csum_bits);
+__sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)
+{
+ __sum16 sum;
+
+ sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));
+ /* See comments in __skb_checksum_complete(). */
+ if (likely(!sum)) {
+ if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
+ !skb->csum_complete_sw)
+ netdev_rx_csum_fault(skb->dev, skb);
+ }
+ if (!skb_shared(skb))
+ skb->csum_valid = !sum;
+ return sum;
+}
+EXPORT_SYMBOL(__skb_checksum_complete_head);
+
+/* This function assumes skb->csum already holds pseudo header's checksum,
+ * which has been changed from the hardware checksum, for example, by
+ * __skb_checksum_validate_complete(). And, the original skb->csum must
+ * have been validated unsuccessfully for CHECKSUM_COMPLETE case.
+ *
+ * It returns non-zero if the recomputed checksum is still invalid, otherwise
+ * zero. The new checksum is stored back into skb->csum unless the skb is
+ * shared.
+ */
+__sum16 __skb_checksum_complete(struct sk_buff *skb)
+{
+ __wsum csum;
+ __sum16 sum;
+
+ csum = skb_checksum(skb, 0, skb->len, 0);
+
+ sum = csum_fold(csum_add(skb->csum, csum));
+ /* This check is inverted, because we already knew the hardware
+ * checksum is invalid before calling this function. So, if the
+ * re-computed checksum is valid instead, then we have a mismatch
+ * between the original skb->csum and skb_checksum(). This means either
+ * the original hardware checksum is incorrect or we screw up skb->csum
+ * when moving skb->data around.
+ */
+ if (likely(!sum)) {
+ if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&
+ !skb->csum_complete_sw)
+ netdev_rx_csum_fault(skb->dev, skb);
+ }
+
+ if (!skb_shared(skb)) {
+ /* Save full packet checksum */
+ skb->csum = csum;
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb->csum_complete_sw = 1;
+ skb->csum_valid = !sum;
+ }
+
+ return sum;
+}
+EXPORT_SYMBOL(__skb_checksum_complete);
+
static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)
{
net_warn_ratelimited(
@@ -2962,28 +3013,6 @@ void skb_append(struct sk_buff *old, struct sk_buff *newsk, struct sk_buff_head
}
EXPORT_SYMBOL(skb_append);
-/**
- * skb_insert - insert a buffer
- * @old: buffer to insert before
- * @newsk: buffer to insert
- * @list: list to use
- *
- * Place a packet before a given packet in a list. The list locks are
- * taken and this function is atomic with respect to other list locked
- * calls.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-void skb_insert(struct sk_buff *old, struct sk_buff *newsk, struct sk_buff_head *list)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- __skb_insert(newsk, old->prev, old, list);
- spin_unlock_irqrestore(&list->lock, flags);
-}
-EXPORT_SYMBOL(skb_insert);
-
static inline void skb_split_inside_header(struct sk_buff *skb,
struct sk_buff* skb1,
const u32 len, const int pos)
@@ -4856,7 +4885,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
#ifdef CONFIG_NET_SWITCHDEV
skb->offload_fwd_mark = 0;
- skb->offload_mr_fwd_mark = 0;
+ skb->offload_l3_fwd_mark = 0;
#endif
if (!xnet)
@@ -5128,7 +5157,7 @@ int skb_vlan_pop(struct sk_buff *skb)
int err;
if (likely(skb_vlan_tag_present(skb))) {
- skb->vlan_tci = 0;
+ __vlan_hwaccel_clear_tag(skb);
} else {
if (unlikely(!eth_type_vlan(skb->protocol)))
return 0;
diff --git a/net/core/sock.c b/net/core/sock.c
index 080a880a1761..f00902c532cc 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -567,6 +567,8 @@ static int sock_setbindtodevice(struct sock *sk, char __user *optval,
lock_sock(sk);
sk->sk_bound_dev_if = index;
+ if (sk->sk_prot->rehash)
+ sk->sk_prot->rehash(sk);
sk_dst_reset(sk);
release_sock(sk);
@@ -698,6 +700,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
break;
case SO_DONTROUTE:
sock_valbool_flag(sk, SOCK_LOCALROUTE, valbool);
+ sk_dst_reset(sk);
break;
case SO_BROADCAST:
sock_valbool_flag(sk, SOCK_BROADCAST, valbool);
@@ -950,10 +953,12 @@ set_rcvbuf:
clear_bit(SOCK_PASSSEC, &sock->flags);
break;
case SO_MARK:
- if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))
+ if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
ret = -EPERM;
- else
+ } else if (val != sk->sk_mark) {
sk->sk_mark = val;
+ sk_dst_reset(sk);
+ }
break;
case SO_RXQ_OVFL:
@@ -1014,7 +1019,10 @@ set_rcvbuf:
case SO_ZEROCOPY:
if (sk->sk_family == PF_INET || sk->sk_family == PF_INET6) {
- if (sk->sk_protocol != IPPROTO_TCP)
+ if (!((sk->sk_type == SOCK_STREAM &&
+ sk->sk_protocol == IPPROTO_TCP) ||
+ (sk->sk_type == SOCK_DGRAM &&
+ sk->sk_protocol == IPPROTO_UDP)))
ret = -ENOTSUPP;
} else if (sk->sk_family != PF_RDS) {
ret = -ENOTSUPP;
diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c
index ba5cba56f574..d8fe3e549373 100644
--- a/net/core/sock_reuseport.c
+++ b/net/core/sock_reuseport.c
@@ -187,6 +187,7 @@ int reuseport_add_sock(struct sock *sk, struct sock *sk2, bool bind_inany)
call_rcu(&old_reuse->rcu, reuseport_free_rcu);
return 0;
}
+EXPORT_SYMBOL(reuseport_add_sock);
void reuseport_detach_sock(struct sock *sk)
{
diff --git a/net/core/stream.c b/net/core/stream.c
index 7d329fb1f553..e94bb02a5629 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -32,7 +32,7 @@ void sk_stream_write_space(struct sock *sk)
struct socket *sock = sk->sk_socket;
struct socket_wq *wq;
- if (sk_stream_is_writeable(sk) && sock) {
+ if (__sk_stream_is_writeable(sk, 1) && sock) {
clear_bit(SOCK_NOSPACE, &sock->flags);
rcu_read_lock();
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-01 23:17:07 +0000