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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 10:37:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 10:37:28 -0700
commitd7e9660ad9d5e0845f52848bce31bcf5cdcdea6b (patch)
treec6c67d145771187b194d79d603742b31090a59d6 /drivers/net/hamradio/bpqether.c
parentMerge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip (diff)
parentnetxen: update copyright (diff)
downloadlinux-dev-d7e9660ad9d5e0845f52848bce31bcf5cdcdea6b.tar.xz
linux-dev-d7e9660ad9d5e0845f52848bce31bcf5cdcdea6b.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1623 commits) netxen: update copyright netxen: fix tx timeout recovery netxen: fix file firmware leak netxen: improve pci memory access netxen: change firmware write size tg3: Fix return ring size breakage netxen: build fix for INET=n cdc-phonet: autoconfigure Phonet address Phonet: back-end for autoconfigured addresses Phonet: fix netlink address dump error handling ipv6: Add IFA_F_DADFAILED flag net: Add DEVTYPE support for Ethernet based devices mv643xx_eth.c: remove unused txq_set_wrr() ucc_geth: Fix hangs after switching from full to half duplex ucc_geth: Rearrange some code to avoid forward declarations phy/marvell: Make non-aneg speed/duplex forcing work for 88E1111 PHYs drivers/net/phy: introduce missing kfree drivers/net/wan: introduce missing kfree net: force bridge module(s) to be GPL Subject: [PATCH] appletalk: Fix skb leak when ipddp interface is not loaded ... Fixed up trivial conflicts: - arch/x86/include/asm/socket.h converted to <asm-generic/socket.h> in the x86 tree. The generic header has the same new #define's, so that works out fine. - drivers/net/tun.c fix conflict between 89f56d1e9 ("tun: reuse struct sock fields") that switched over to using 'tun->socket.sk' instead of the redundantly available (and thus removed) 'tun->sk', and 2b980dbd ("lsm: Add hooks to the TUN driver") which added a new 'tun->sk' use. Noted in 'next' by Stephen Rothwell.
Diffstat (limited to 'drivers/net/hamradio/bpqether.c')
-rw-r--r--drivers/net/hamradio/bpqether.c30
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index abcd19a8bff9..fe893c91a01b 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -247,9 +247,8 @@ drop:
/*
* Send an AX.25 frame via an ethernet interface
*/
-static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t bpq_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct sk_buff *newskb;
unsigned char *ptr;
struct bpqdev *bpq;
int size;
@@ -263,28 +262,23 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
- skb_pull(skb, 1);
+ skb_pull(skb, 1); /* Drop KISS byte */
size = skb->len;
/*
- * The AX.25 code leaves enough room for the ethernet header, but
- * sendto() does not.
+ * We're about to mess with the skb which may still shared with the
+ * generic networking code so unshare and ensure it's got enough
+ * space for the BPQ headers.
*/
- if (skb_headroom(skb) < AX25_BPQ_HEADER_LEN) { /* Ough! */
- if ((newskb = skb_realloc_headroom(skb, AX25_BPQ_HEADER_LEN)) == NULL) {
- printk(KERN_WARNING "bpqether: out of memory\n");
- kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- if (skb->sk != NULL)
- skb_set_owner_w(newskb, skb->sk);
-
+ if (skb_cow(skb, AX25_BPQ_HEADER_LEN)) {
+ if (net_ratelimit())
+ pr_err("bpqether: out of memory\n");
kfree_skb(skb);
- skb = newskb;
+
+ return NETDEV_TX_OK;
}
- ptr = skb_push(skb, 2);
+ ptr = skb_push(skb, 2); /* Make space for length */
*ptr++ = (size + 5) % 256;
*ptr++ = (size + 5) / 256;
@@ -305,7 +299,7 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
dev_queue_xmit(skb);
netif_wake_queue(dev);
- return 0;
+ return NETDEV_TX_OK;
}
/*