Re: [PATCH] [net] dcb_doit: remove redundant skb check
From: Gaurav Singh Date: Mon, 22 Jun 2020 22:50:39 -0400 > skb cannot be NULL here since its already being accessed > before: sock_net(skb->sk). Remove the redundant null check. > > Signed-off-by: Gaurav Singh Applied.
[PATCH] [net] dcb_doit: remove redundant skb check
skb cannot be NULL here since its already being accessed before: sock_net(skb->sk). Remove the redundant null check. Signed-off-by: Gaurav Singh --- net/dcb/dcbnl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index d2a4553bcf39..84dde5a2066e 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1736,7 +1736,7 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, struct net_device *netdev; struct dcbmsg *dcb = nlmsg_data(nlh); struct nlattr *tb[DCB_ATTR_MAX + 1]; - u32 portid = skb ? NETLINK_CB(skb).portid : 0; + u32 portid = NETLINK_CB(skb).portid; int ret = -EINVAL; struct sk_buff *reply_skb; struct nlmsghdr *reply_nlh = NULL; -- 2.17.1
Re: [PATCH] [net] dcb_doit: remove redundant skb check
On Sun, 21 Jun 2020 12:56:28 -0400 Gaurav Singh wrote: > Remove the redundant null check for skb. > > Signed-off-by: Gaurav Singh Thanks for the patch, it looks correct, but could you describe your proof / reasoning based on which this change is correct? Please post non-bug fixes like this with a [net-next] rather than [net] tag (https://www.kernel.org/doc/html/latest/networking/netdev-FAQ.html). > diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c > index d2a4553bcf39..84dde5a2066e 100644 > --- a/net/dcb/dcbnl.c > +++ b/net/dcb/dcbnl.c > @@ -1736,7 +1736,7 @@ static int dcb_doit(struct sk_buff *skb, struct > nlmsghdr *nlh, > struct net_device *netdev; > struct dcbmsg *dcb = nlmsg_data(nlh); > struct nlattr *tb[DCB_ATTR_MAX + 1]; > - u32 portid = skb ? NETLINK_CB(skb).portid : 0; > + u32 portid = NETLINK_CB(skb).portid; > int ret = -EINVAL; > struct sk_buff *reply_skb; > struct nlmsghdr *reply_nlh = NULL;
[PATCH] [net] dcb_doit: remove redundant skb check
Remove the redundant null check for skb. Signed-off-by: Gaurav Singh --- net/dcb/dcbnl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index d2a4553bcf39..84dde5a2066e 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1736,7 +1736,7 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, struct net_device *netdev; struct dcbmsg *dcb = nlmsg_data(nlh); struct nlattr *tb[DCB_ATTR_MAX + 1]; - u32 portid = skb ? NETLINK_CB(skb).portid : 0; + u32 portid = NETLINK_CB(skb).portid; int ret = -EINVAL; struct sk_buff *reply_skb; struct nlmsghdr *reply_nlh = NULL; -- 2.17.1
