From efc683fc2a692735029067b4f939af2a3625e31d Mon Sep 17 00:00:00 2001 From: Gautam Kachroo Date: Fri, 6 Feb 2009 00:52:04 -0800 Subject: neigh: some entries can be skipped during dumping neightbl_dump_info and neigh_dump_table can skip entries if the *fill*info functions return an error. This results in an incomplete dump ((invoked by netlink requests for RTM_GETNEIGHTBL or RTM_GETNEIGH) nidx and idx should not be incremented if the current entry was not placed in the output buffer Signed-off-by: Gautam Kachroo Signed-off-by: David S. Miller --- net/core/neighbour.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'net/core') diff --git a/net/core/neighbour.c b/net/core/neighbour.c index f66c58df8953..278a142d1047 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1994,8 +1994,8 @@ static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb) if (!net_eq(neigh_parms_net(p), net)) continue; - if (nidx++ < neigh_skip) - continue; + if (nidx < neigh_skip) + goto next; if (neightbl_fill_param_info(skb, tbl, p, NETLINK_CB(cb->skb).pid, @@ -2003,6 +2003,8 @@ static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb) RTM_NEWNEIGHTBL, NLM_F_MULTI) <= 0) goto out; + next: + nidx++; } neigh_skip = 0; @@ -2082,12 +2084,10 @@ static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb, if (h > s_h) s_idx = 0; for (n = tbl->hash_buckets[h], idx = 0; n; n = n->next) { - int lidx; if (dev_net(n->dev) != net) continue; - lidx = idx++; - if (lidx < s_idx) - continue; + if (idx < s_idx) + goto next; if (neigh_fill_info(skb, n, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, RTM_NEWNEIGH, @@ -2096,6 +2096,8 @@ static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb, rc = -1; goto out; } + next: + idx++; } } read_unlock_bh(&tbl->lock); -- cgit v1.2.3 From b4bd07c20ba0c1fa7ad09ba257e0a5cfc2bf6bb3 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 6 Feb 2009 22:06:43 -0800 Subject: net_dma: call dmaengine_get only if NET_DMA enabled Based upon a patch from Atsushi Nemoto -------------------- The commit 649274d993212e7c23c0cb734572c2311c200872 ("net_dma: acquire/release dma channels on ifup/ifdown") added unconditional call of dmaengine_get() to net_dma. The API should be called only if NET_DMA was enabled. -------------------- Signed-off-by: David S. Miller Acked-by: Dan Williams --- include/linux/dmaengine.h | 12 ++++++++++++ net/core/dev.c | 4 ++-- 2 files changed, 14 insertions(+), 2 deletions(-) (limited to 'net/core') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 3e0f64c335c8..3e68469c1885 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -282,6 +282,18 @@ static inline void dmaengine_put(void) } #endif +#ifdef CONFIG_NET_DMA +#define net_dmaengine_get() dmaengine_get() +#define net_dmaengine_put() dmaengine_put() +#else +static inline void net_dmaengine_get(void) +{ +} +static inline void net_dmaengine_put(void) +{ +} +#endif + dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest, void *src, size_t len); dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan, diff --git a/net/core/dev.c b/net/core/dev.c index 5379b0c1190a..a17e00662363 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1090,7 +1090,7 @@ int dev_open(struct net_device *dev) /* * Enable NET_DMA */ - dmaengine_get(); + net_dmaengine_get(); /* * Initialize multicasting status @@ -1172,7 +1172,7 @@ int dev_close(struct net_device *dev) /* * Shutdown NET_DMA */ - dmaengine_put(); + net_dmaengine_put(); return 0; } -- cgit v1.2.3