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Commit 7c888a15 authored by Justin Tee's avatar Justin Tee Committed by Gerrit - the friendly Code Review server
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net: Kernel changes for Generic Software Bridge(GSB) 



Changes are made to let GSB intercept network packets and consume them
when possible. The goal is to bridge the packets directly to backhaul
without letting packet do a round trip through the network stack.

Acked-by: default avatarVinisha Varre <vvarre@qti.qualcomm.com>
Signed-off-by: default avatarJustin Tee <justint@codeaurora.org>
Change-Id: I274da3196b4488f80ff9fc223d1f6ba0d04d3832
parent 674e9f4d

net/core/dev.c

+11 −0
Original line number Diff line number Diff line
@@ -4171,6 +4171,9 @@ static inline int nf_ingress(struct sk_buff *skb, struct packet_type **pt_prev, 
	return 0;

}



int (*gsb_nw_stack_recv)(struct sk_buff *skb) __rcu __read_mostly;

EXPORT_SYMBOL(gsb_nw_stack_recv);



int (*athrs_fast_nat_recv)(struct sk_buff *skb) __rcu __read_mostly;

EXPORT_SYMBOL(athrs_fast_nat_recv);
@@ -4185,6 +4188,7 @@ static int __netif_receive_skb_core(struct sk_buff *skb, bool pfmemalloc) 
	bool deliver_exact = false;

	int ret = NET_RX_DROP;

	__be16 type;

	int (*gsb_ns_recv)(struct sk_buff *skb);

	int (*fast_recv)(struct sk_buff *skb);

	int (*embms_recv)(struct sk_buff *skb);
@@ -4246,6 +4250,13 @@ static int __netif_receive_skb_core(struct sk_buff *skb, bool pfmemalloc) 
			goto out;

	}

#endif

	gsb_ns_recv = rcu_dereference(gsb_nw_stack_recv);

		if (gsb_ns_recv) {

			if (gsb_ns_recv(skb)) {

				ret = NET_RX_SUCCESS;

				goto out;

		}

	}

	fast_recv = rcu_dereference(athrs_fast_nat_recv);

	if (fast_recv) {

		if (fast_recv(skb)) {