fixup! Add core version of XDPLua

Author: VictorNogueiraRio

net/core/dev.c

@@ -4425,9 +4425,10 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
 	rxqueue = netif_get_rxqueue(skb);
 	xdp->rxq = &rxqueue->xdp_rxq;
 
-	if (xdp_prog) {
+	if (xdp_prog)
 		act = bpf_prog_run_xdp(xdp_prog, xdp);
-	} else {
+
+	if (act == XDP_PASS || !xdp_prog) {
 		cpu = smp_processor_id();
 		list_for_each_entry(sc, &lua_state_cpu_list, list) {
 			if (sc->cpu == cpu) {

net/core/rtnetlink.c

@@ -1799,7 +1799,7 @@ static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = {
 	[IFLA_XDP_ATTACHED]	= { .type = NLA_U8 },
 	[IFLA_XDP_FLAGS]	= { .type = NLA_U32 },
 	[IFLA_XDP_PROG_ID]	= { .type = NLA_U32 },
-	[IFLA_XDP_LUA_PROG]	= { .type = NLA_STRING, .len = 4096 },
+	[IFLA_XDP_LUA_PROG]	= { .type = NLA_STRING, .len = 8192 },
 	[IFLA_XDP_LUA_FUNC]	= { .type = NLA_STRING, .len = 256  },
 };
 

tools/lib/bpf/netlink.c

@@ -193,7 +193,7 @@ int bpf_set_link_xdp_lua_prog(int ifindex, char *lua_prog) {
 	struct {
 		struct nlmsghdr  nh;
 		struct ifinfomsg ifinfo;
-		char             attrbuf[4096 + 256];
+		char             attrbuf[8192];
 	} req;
 	__u32 nl_pid;
 
@@ -248,7 +248,7 @@ int bpf_set_link_xdp_lua_func(int ifindex, char *lua_funcname)
 	struct {
 		struct nlmsghdr  nh;
 		struct ifinfomsg ifinfo;
-		char             attrbuf[4096 + 256];
+		char             attrbuf[256];
 	} req;
 	__u32 nl_pid;