From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Sun, 14 Dec 2008 01:32:46 +0000 (-0500)
Subject: Ref only the head of a pbuf chain, instead of the whole thing, to avoid leaking pbufs.
X-Git-Url: http://git.joshuawise.com/netwatch.git/commitdiff_plain/6b91f09cf683c29989ab259f4a433fb7d1427b36?hp=66cd7e8220e0f7dbb0e43f44f6aab60194548ad0

Ref only the head of a pbuf chain, instead of the whole thing, to avoid leaking pbufs.
---

diff --git a/net/3c90x.c b/net/3c90x.c
index 7b6a72e..d405352 100644
--- a/net/3c90x.c
+++ b/net/3c90x.c
@@ -432,12 +432,12 @@ static void _transmit(struct nic *_nic, struct pbuf *p)
 	len = 0;
 	n = 0;
 	txpbufs[txprod] = p;
+	pbuf_ref(p);
 	for (; p; p = p->next)
 	{
 		txdescs[txprod].segments[n].addr = v2p(p->payload);
 		txdescs[txprod].segments[n].len = p->len | (p->next ? 0 : (1 << 31));
 		len += p->len;
-		pbuf_ref(p);
 		n++;
 	}
 	txdescs[txprod].hdr = len;	/* If we wanted completion notification, bit 15 */