[PATCH net-next v2 04/11] net/ipv6: Remove jumbo_remove step from TX path
From: Alice Mikityanska <hidden>
Date: 2026-01-13 21:27:47
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
From: Alice Mikityanska <redacted> Now that the kernel doesn't insert HBH for BIG TCP IPv6 packets, remove unnecessary steps from the GSO TX path, that used to check and remove HBH. Signed-off-by: Alice Mikityanska <redacted> --- net/core/dev.c | 6 ++---- net/ipv6/ip6_offload.c | 5 +---- 2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index c711da335510..fb142613ce1a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c@@ -3800,8 +3800,7 @@ static netdev_features_t gso_features_check(const struct sk_buff *skb, (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4 && vlan_get_protocol(skb) == htons(ETH_P_IPV6))) && skb_transport_header_was_set(skb) && - skb_network_header_len(skb) != sizeof(struct ipv6hdr) && - !ipv6_has_hopopt_jumbo(skb)) + skb_network_header_len(skb) != sizeof(struct ipv6hdr)) features &= ~(NETIF_F_IPV6_CSUM | NETIF_F_TSO6 | NETIF_F_GSO_UDP_L4); return features;
@@ -3904,8 +3903,7 @@ int skb_csum_hwoffload_help(struct sk_buff *skb, if (features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) { if (vlan_get_protocol(skb) == htons(ETH_P_IPV6) && - skb_network_header_len(skb) != sizeof(struct ipv6hdr) && - !ipv6_has_hopopt_jumbo(skb)) + skb_network_header_len(skb) != sizeof(struct ipv6hdr)) goto sw_checksum; switch (skb->csum_offset) {
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index e5861089cc80..3252a9c2ad58 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c@@ -110,7 +110,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, struct sk_buff *segs = ERR_PTR(-EINVAL); struct ipv6hdr *ipv6h; const struct net_offload *ops; - int proto, err; + int proto; struct frag_hdr *fptr; unsigned int payload_len; u8 *prevhdr;
@@ -120,9 +120,6 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, bool gso_partial; skb_reset_network_header(skb); - err = ipv6_hopopt_jumbo_remove(skb); - if (err) - return ERR_PTR(err); nhoff = skb_network_header(skb) - skb_mac_header(skb); if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) goto out;
--
2.52.0