jool: fix build for 6.18

Add backport to fix build against 6.18 kernel.

Signed-off-by: John Audia <[email protected]>

Author: graysky2

net/jool/Makefile

@@ -9,7 +9,7 @@ include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=jool
 PKG_VERSION:=4.1.14
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_LICENSE:=GPL-2.0-only
 PKG_LICENSE_FILES:=COPYING

net/jool/patches/200-fix-compilation-in-v6.18.patch

@@ -0,0 +1,37 @@
+From 89bd7a029b3ed81ac3b4e582b4049d2ea8722970 Mon Sep 17 00:00:00 2001
+From: Tj <[email protected]>
+Date: Mon, 1 Dec 2025 18:24:47 +0000
+Subject: [PATCH] Fix compilation in v6.18
+
+struct flowi4.tos renamed to 'dscp' and type dscp_t in commit
+1bec9d0c0046fe4e2bfb6a1c5aadcb5d56cdb0fb
+---
+ src/mod/common/rfc7915/6to4.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/src/mod/common/rfc7915/6to4.c
++++ b/src/mod/common/rfc7915/6to4.c
+@@ -203,7 +203,11 @@ static verdict compute_flowix64(struct x
+ 	hdr6 = pkt_ip6_hdr(&state->in);
+ 
+ 	flow4->flowi4_mark = state->in.skb->mark;
++#if LINUX_VERSION_AT_LEAST(6, 18, 0, 0, 0)
++	flow4->flowi4_dscp = xlat_tos(&state->jool.globals, hdr6);
++#else
+ 	flow4->flowi4_tos = xlat_tos(&state->jool.globals, hdr6);
++#endif
+ 	flow4->flowi4_scope = RT_SCOPE_UNIVERSE;
+ 	flow4->flowi4_proto = xlat_proto(hdr6);
+ 	/*
+@@ -645,7 +649,11 @@ static verdict ttp64_ipv4_external(struc
+ 
+ 	hdr4->version = 4;
+ 	hdr4->ihl = 5;
++#if LINUX_VERSION_AT_LEAST(6, 18, 0, 0, 0)
++	hdr4->tos = flow4->flowi4_dscp;
++#else
+ 	hdr4->tos = flow4->flowi4_tos;
++#endif
+ 	hdr4->tot_len = cpu_to_be16(state->out.skb->len);
+ 	generate_ipv4_id(state, hdr4, hdr_frag);
+ 	hdr4->frag_off = xlat_frag_off(hdr_frag, state);