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| author | Edward Cree <ecree@solarflare.com> | 2020-10-28 20:43:59 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-10-30 17:42:53 -0700 |
| commit | dbe2f251f9eb2158d2c9ec22cc22cc2fc66370e1 (patch) | |
| tree | 2b9bde742ca1405354868ae4fd21d57af0890e45 | |
| parent | 806f9f23b6732de81daf3aafae5363bb56d29ed6 (diff) | |
| download | linux-stable-dbe2f251f9eb2158d2c9ec22cc22cc2fc66370e1.tar.gz linux-stable-dbe2f251f9eb2158d2c9ec22cc22cc2fc66370e1.tar.bz2 linux-stable-dbe2f251f9eb2158d2c9ec22cc22cc2fc66370e1.zip | |
sfc: only use fixed-id if the skb asks for it
AIUI, the NETIF_F_TSO_MANGLEID flag is a signal to the stack that a
driver may _need_ to mangle IDs in order to do TSO, and conversely
a signal from the stack that the driver is permitted to do so.
Since we support both fixed and incrementing IPIDs, we should rely
on the SKB_GSO_FIXEDID flag on a per-skb basis, rather than using
the MANGLEID feature to make all TSOs fixed-id.
Includes other minor cleanups of ef100_make_tso_desc() coding style.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/sfc/ef100_nic.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/ef100_tx.c | 13 |
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c index bf92cdc60cda..8a187a16ac89 100644 --- a/drivers/net/ethernet/sfc/ef100_nic.c +++ b/drivers/net/ethernet/sfc/ef100_nic.c @@ -694,7 +694,7 @@ static unsigned int ef100_check_caps(const struct efx_nic *efx, #define EF100_OFFLOAD_FEATURES (NETIF_F_HW_CSUM | NETIF_F_RXCSUM | \ NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_NTUPLE | \ NETIF_F_RXHASH | NETIF_F_RXFCS | NETIF_F_TSO_ECN | NETIF_F_RXALL | \ - NETIF_F_TSO_MANGLEID | NETIF_F_HW_VLAN_CTAG_TX) + NETIF_F_HW_VLAN_CTAG_TX) const struct efx_nic_type ef100_pf_nic_type = { .revision = EFX_REV_EF100, diff --git a/drivers/net/ethernet/sfc/ef100_tx.c b/drivers/net/ethernet/sfc/ef100_tx.c index d267b12bdaa0..ad0ad9bad423 100644 --- a/drivers/net/ethernet/sfc/ef100_tx.c +++ b/drivers/net/ethernet/sfc/ef100_tx.c @@ -187,21 +187,22 @@ static void ef100_make_tso_desc(struct efx_nic *efx, struct efx_tx_buffer *buffer, efx_oword_t *txd, unsigned int segment_count) { - u32 mangleid = (efx->net_dev->features & NETIF_F_TSO_MANGLEID) || - skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID ? - ESE_GZ_TX_DESC_IP4_ID_NO_OP : - ESE_GZ_TX_DESC_IP4_ID_INC_MOD16; - u16 vlan_enable = efx->net_dev->features & NETIF_F_HW_VLAN_CTAG_TX ? - skb_vlan_tag_present(skb) : 0; bool gso_partial = skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL; unsigned int len, ip_offset, tcp_offset, payload_segs; + u32 mangleid = ESE_GZ_TX_DESC_IP4_ID_INC_MOD16; unsigned int outer_ip_offset, outer_l4_offset; u16 vlan_tci = skb_vlan_tag_get(skb); u32 mss = skb_shinfo(skb)->gso_size; bool encap = skb->encapsulation; + u16 vlan_enable = 0; struct tcphdr *tcp; u32 paylen; + if (skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID) + mangleid = ESE_GZ_TX_DESC_IP4_ID_NO_OP; + if (efx->net_dev->features & NETIF_F_HW_VLAN_CTAG_TX) + vlan_enable = skb_vlan_tag_present(skb); + len = skb->len - buffer->len; /* We use 1 for the TSO descriptor and 1 for the header */ payload_segs = segment_count - 2; |