[PATCH RFC net-next 04/17] net/ipv6: Remove jumbo_remove step from TX path
From: Maxim Mikityanskiy <hidden>
Date: 2025-06-17 14:42:39
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: Maxim Mikityanskiy <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: Maxim Mikityanskiy <redacted> --- net/core/dev.c | 3 +-- net/ipv6/ip6_offload.c | 5 +---- 2 files changed, 2 insertions(+), 6 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 5baa4691074f..925ae7cb7f36 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c@@ -3882,8 +3882,7 @@ 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 2b1f49192820..f9f47d25b18f 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;
--
2.49.0