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[BPF] allow UDP gso packets to nodeport tunnel #11653

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Merged
tomastigera merged 1 commit into from
Jan 14, 2026
+6 −6
Merged

[BPF] allow UDP gso packets to nodeport tunnel #11653

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12 changes: 6 additions & 6 deletions felix/bpf-gpl/tc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -938,9 +938,9 @@ static CALI_BPF_INLINE enum do_nat_res do_nat(struct cali_tc_ctx *ctx,
}
}
if (encap_needed) {
if (!(STATE->ip_proto == IPPROTO_TCP && skb_is_gso(ctx->skb)) &&
ip_is_dnf(ip_hdr(ctx)) && vxlan_encap_too_big(ctx)) {
CALI_DEBUG("Request packet with DNF set is too big");
if (!skb_is_gso(ctx->skb) && ip_is_dnf(ip_hdr(ctx)) && vxlan_encap_too_big(ctx)) {
CALI_DEBUG("Return ICMP mtu is too big segs %d size %d",
ctx->skb->gso_segs, ctx->skb->gso_size);
goto icmp_too_big;
}
STATE->ip_src = HOST_IP;
Expand Down Expand Up @@ -1070,9 +1070,9 @@ static CALI_BPF_INLINE enum do_nat_res do_nat(struct cali_tc_ctx *ctx,
goto allow;
}

if (!(STATE->ip_proto == IPPROTO_TCP && skb_is_gso(ctx->skb)) &&
ip_is_dnf(ip_hdr(ctx)) && vxlan_encap_too_big(ctx)) {
CALI_DEBUG("Return ICMP mtu is too big");
if (!skb_is_gso(ctx->skb) && ip_is_dnf(ip_hdr(ctx)) && vxlan_encap_too_big(ctx)) {
CALI_DEBUG("Return ICMP mtu is too big segs %d size %d",
ctx->skb->gso_segs, ctx->skb->gso_size);
goto icmp_too_big;
}
}
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