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| author | Shannon Nelson <shannon.nelson@oracle.com> | 2018-06-26 14:19:10 -0700 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2018-07-19 10:18:04 +0200 |
| commit | fcb662deeb83bbc6df58b472a3bfe76981a8cc36 (patch) | |
| tree | 47afec014a967cf45354ba303d35ae6227864611 | |
| parent | 03dc7a35fcc83a199121a5156c4a7a976b836682 (diff) | |
| download | linux-fcb662deeb83bbc6df58b472a3bfe76981a8cc36.tar.gz linux-fcb662deeb83bbc6df58b472a3bfe76981a8cc36.tar.bz2 linux-fcb662deeb83bbc6df58b472a3bfe76981a8cc36.zip | |
xfrm: don't check offload_handle for nonzero
The offload_handle should be an opaque data cookie for the driver
to use, much like the data cookie for a timer or alarm callback.
Thus, the XFRM stack should not be checking for non-zero, because
the driver might use that to store an array reference, which could
be zero, or some other zero but meaningful value.
We can remove the checks for non-zero because there are plenty
other attributes also being checked to see if there is an offload
in place for the SA in question.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
| -rw-r--r-- | net/ipv4/esp4_offload.c | 6 | ||||
| -rw-r--r-- | net/ipv6/esp6_offload.c | 6 | ||||
| -rw-r--r-- | net/xfrm/xfrm_device.c | 6 |
3 files changed, 7 insertions, 11 deletions
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c index 7cf755ef9efb..133589d693a9 100644 --- a/net/ipv4/esp4_offload.c +++ b/net/ipv4/esp4_offload.c @@ -135,8 +135,7 @@ static struct sk_buff *esp4_gso_segment(struct sk_buff *skb, skb->encap_hdr_csum = 1; - if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle || - (x->xso.dev != skb->dev)) + if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev) esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK); else if (!(features & NETIF_F_HW_ESP_TX_CSUM)) esp_features = features & ~NETIF_F_CSUM_MASK; @@ -179,8 +178,7 @@ static int esp_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features_ if (!xo) return -EINVAL; - if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle || - (x->xso.dev != skb->dev)) { + if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev) { xo->flags |= CRYPTO_FALLBACK; hw_offload = false; } diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c index 27f59b61f70f..96af267835c3 100644 --- a/net/ipv6/esp6_offload.c +++ b/net/ipv6/esp6_offload.c @@ -162,8 +162,7 @@ static struct sk_buff *esp6_gso_segment(struct sk_buff *skb, skb->encap_hdr_csum = 1; - if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle || - (x->xso.dev != skb->dev)) + if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev) esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK); else if (!(features & NETIF_F_HW_ESP_TX_CSUM)) esp_features = features & ~NETIF_F_CSUM_MASK; @@ -207,8 +206,7 @@ static int esp6_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features if (!xo) return -EINVAL; - if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle || - (x->xso.dev != skb->dev)) { + if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev) { xo->flags |= CRYPTO_FALLBACK; hw_offload = false; } diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index 11d56a44e9e8..5611b7521020 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -56,7 +56,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur if (skb_is_gso(skb)) { struct net_device *dev = skb->dev; - if (unlikely(!x->xso.offload_handle || (x->xso.dev != dev))) { + if (unlikely(x->xso.dev != dev)) { struct sk_buff *segs; /* Packet got rerouted, fixup features and segment it. */ @@ -211,8 +211,8 @@ bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) if (!x->type_offload || x->encap) return false; - if ((!dev || (x->xso.offload_handle && (dev == xfrm_dst_path(dst)->dev))) && - (!xdst->child->xfrm && x->type->get_mtu)) { + if ((!dev || (dev == xfrm_dst_path(dst)->dev)) && + (!xdst->child->xfrm && x->type->get_mtu)) { mtu = x->type->get_mtu(x, xdst->child_mtu_cached); if (skb->len <= mtu) |