batman-adv: linearise the tt_response skb only if needed (dc58fe32) · Commits · 戴 / test

The TT_RESPONSE skb has to be linearised only if the node plans to access the packet payload (so only if the message is directed to that node). In all the other cases the node can avoid this memory operation Signed-off-by:

Antonio Quartulli <ordex@autistici.org> Signed-off-by:

Sven Eckelmann <sven@narfation.org>

net/batman-adv/routing.c

+6 −5

Original line number	Diff line number	Diff line
		@@ -616,13 +616,14 @@ int recv_tt_query(struct sk_buff skb, struct hard_iface recv_if)
		}
		break;
		case TT_RESPONSE:
		/* packet needs to be linearized to access the TT changes */
		if (is_my_mac(tt_query->dst)) {
		/* packet needs to be linearized to access the TT
		* changes */
		if (skb_linearize(skb) < 0)
		goto out;

		if (is_my_mac(tt_query->dst))
		handle_tt_response(bat_priv, tt_query);
		else {
		} else {
		bat_dbg(DBG_TT, bat_priv,
		"Routing TT_RESPONSE to %pM [%c]\n",
		tt_query->dst,

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