diff options
| author | Sabrina Dubroca <sd@queasysnail.net> | 2024-11-07 00:13:29 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-11-11 14:12:21 -0800 |
| commit | bd97c29f7e9e45980417973d5e8b755bd71e10a9 (patch) | |
| tree | 5a6c2a0420a378d609e23df45a53b2c5bd312742 /drivers | |
| parent | 0189270117c3a3b43d226ed9da5d1ee4dc58b45c (diff) | |
macsec: add some of the lower device's features when offloading
This commit extends the set of netdevice features supported by macsec
devices when offload is enabled, which increases performance
significantly (for a single TCP stream: 17.5Gbps to 38.5Gbps on my
test machines).
Commit c850240b6c41 ("net: macsec: report real_dev features when HW
offloading is enabled") previously attempted something similar, but
had to be reverted (commit 8bcd560ae878 ("Revert "net: macsec: report
real_dev features when HW offloading is enabled"")) because the set of
features it exposed was too large.
During initialization, all features are set, and they're then removed
via ndo_fix_features (macsec_fix_features). This allows the
offloadable features to be automatically enabled if offloading is
turned on after device creation.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/8b32c3011d269d6f149724e80c1ffe67c9534067.1730929545.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/macsec.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 53dc89a6ae67..e3579bfd3bdc 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -2666,6 +2666,8 @@ static int macsec_update_offload(struct net_device *dev, enum macsec_offload off macsec_set_head_tail_room(dev); macsec->insert_tx_tag = macsec_needs_tx_tag(macsec, ops); + netdev_update_features(dev); + return ret; } @@ -3521,6 +3523,10 @@ static netdev_tx_t macsec_start_xmit(struct sk_buff *skb, #define MACSEC_FEATURES \ (NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST) +#define MACSEC_OFFLOAD_FEATURES \ + (MACSEC_FEATURES | NETIF_F_GSO_SOFTWARE | NETIF_F_SOFT_FEATURES | \ + NETIF_F_LRO | NETIF_F_RXHASH | NETIF_F_CSUM_MASK | NETIF_F_RXCSUM) + static int macsec_dev_init(struct net_device *dev) { struct macsec_dev *macsec = macsec_priv(dev); @@ -3531,7 +3537,10 @@ static int macsec_dev_init(struct net_device *dev) if (err) return err; - dev->features = real_dev->features & MACSEC_FEATURES; + dev->hw_features = real_dev->hw_features & MACSEC_OFFLOAD_FEATURES; + dev->hw_features |= NETIF_F_GSO_SOFTWARE; + + dev->features = real_dev->features & MACSEC_OFFLOAD_FEATURES; dev->features |= NETIF_F_GSO_SOFTWARE; dev->lltx = true; dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS; @@ -3561,8 +3570,12 @@ static netdev_features_t macsec_fix_features(struct net_device *dev, { struct macsec_dev *macsec = macsec_priv(dev); struct net_device *real_dev = macsec->real_dev; + netdev_features_t mask; + + mask = macsec_is_offloaded(macsec) ? MACSEC_OFFLOAD_FEATURES + : MACSEC_FEATURES; - features &= (real_dev->features & MACSEC_FEATURES) | + features &= (real_dev->features & mask) | NETIF_F_GSO_SOFTWARE | NETIF_F_SOFT_FEATURES; return features; |