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netlink: Rename pid to portid to avoid confusion

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It is a frequent mistake to confuse the netlink port identifier with a
process identifier.  Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.

I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.

I have successfully built an allyesconfig kernel with this change.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2012-09-07 20:12:54 +00:00 • committed by David S. Miller
parent 9f00d9776b
commit 15e473046c
75 changed files with 728 additions and 728 deletions
Download patch file Download diff file Expand all files Collapse all files

52
net/sched/act_api.c
View file

@ -644,7 +644,7 @@ errout:
}
static int
tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 portid, u32 seq,
u16 flags, int event, int bind, int ref)
{
struct tcamsg *t;
@ -652,7 +652,7 @@ tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
unsigned char *b = skb_tail_pointer(skb);
struct nlattr *nest;
nlh = nlmsg_put(skb, pid, seq, event, sizeof(*t), flags);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
if (!nlh)
goto out_nlmsg_trim;
t = nlmsg_data(nlh);
@ -678,7 +678,7 @@ out_nlmsg_trim:
}
static int
act_get_notify(struct net *net, u32 pid, struct nlmsghdr *n,
act_get_notify(struct net *net, u32 portid, struct nlmsghdr *n,
struct tc_action *a, int event)
{
struct sk_buff *skb;
@ -686,16 +686,16 @@ act_get_notify(struct net *net, u32 pid, struct nlmsghdr *n,
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (tca_get_fill(skb, a, pid, n->nlmsg_seq, 0, event, 0, 0) <= 0) {
if (tca_get_fill(skb, a, portid, n->nlmsg_seq, 0, event, 0, 0) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
return rtnl_unicast(skb, net, pid);
return rtnl_unicast(skb, net, portid);
}
static struct tc_action *
tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 portid)
{
struct nlattr *tb[TCA_ACT_MAX + 1];
struct tc_action *a;
@ -762,7 +762,7 @@ static struct tc_action *create_a(int i)
}
static int tca_action_flush(struct net *net, struct nlattr *nla,
struct nlmsghdr *n, u32 pid)
struct nlmsghdr *n, u32 portid)
{
struct sk_buff *skb;
unsigned char *b;
@ -799,7 +799,7 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
if (a->ops == NULL)
goto err_out;
nlh = nlmsg_put(skb, pid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t), 0);
nlh = nlmsg_put(skb, portid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t), 0);
if (!nlh)
goto out_module_put;
t = nlmsg_data(nlh);
@ -823,7 +823,7 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
nlh->nlmsg_flags |= NLM_F_ROOT;
module_put(a->ops->owner);
kfree(a);
err = rtnetlink_send(skb, net, pid, RTNLGRP_TC,
err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
if (err > 0)
return 0;
@ -841,7 +841,7 @@ noflush_out:
static int
tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
u32 pid, int event)
u32 portid, int event)
{
int i, ret;
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
@ -853,13 +853,13 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
if (event == RTM_DELACTION && n->nlmsg_flags & NLM_F_ROOT) {
if (tb[1] != NULL)
return tca_action_flush(net, tb[1], n, pid);
return tca_action_flush(net, tb[1], n, portid);
else
return -EINVAL;
}
for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
act = tcf_action_get_1(tb[i], n, pid);
act = tcf_action_get_1(tb[i], n, portid);
if (IS_ERR(act)) {
ret = PTR_ERR(act);
goto err;
@ -874,7 +874,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
}
if (event == RTM_GETACTION)
ret = act_get_notify(net, pid, n, head, event);
ret = act_get_notify(net, portid, n, head, event);
else { /* delete */
struct sk_buff *skb;
@ -884,7 +884,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
goto err;
}
if (tca_get_fill(skb, head, pid, n->nlmsg_seq, 0, event,
if (tca_get_fill(skb, head, portid, n->nlmsg_seq, 0, event,
0, 1) <= 0) {
kfree_skb(skb);
ret = -EINVAL;
@ -893,7 +893,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
/* now do the delete */
tcf_action_destroy(head, 0);
ret = rtnetlink_send(skb, net, pid, RTNLGRP_TC,
ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
if (ret > 0)
return 0;
@ -905,7 +905,7 @@ err:
}
static int tcf_add_notify(struct net *net, struct tc_action *a,
u32 pid, u32 seq, int event, u16 flags)
u32 portid, u32 seq, int event, u16 flags)
{
struct tcamsg *t;
struct nlmsghdr *nlh;
@ -920,7 +920,7 @@ static int tcf_add_notify(struct net *net, struct tc_action *a,
b = skb_tail_pointer(skb);
nlh = nlmsg_put(skb, pid, seq, event, sizeof(*t), flags);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
if (!nlh)
goto out_kfree_skb;
t = nlmsg_data(nlh);
@ -940,7 +940,7 @@ static int tcf_add_notify(struct net *net, struct tc_action *a,
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
NETLINK_CB(skb).dst_group = RTNLGRP_TC;
err = rtnetlink_send(skb, net, pid, RTNLGRP_TC, flags & NLM_F_ECHO);
err = rtnetlink_send(skb, net, portid, RTNLGRP_TC, flags & NLM_F_ECHO);
if (err > 0)
err = 0;
return err;
@ -953,7 +953,7 @@ out_kfree_skb:
static int
tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
u32 pid, int ovr)
u32 portid, int ovr)
{
int ret = 0;
struct tc_action *act;
@ -971,7 +971,7 @@ tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
/* dump then free all the actions after update; inserted policy
* stays intact
*/
ret = tcf_add_notify(net, act, pid, seq, RTM_NEWACTION, n->nlmsg_flags);
ret = tcf_add_notify(net, act, portid, seq, RTM_NEWACTION, n->nlmsg_flags);
for (a = act; a; a = act) {
act = a->next;
kfree(a);
@ -984,7 +984,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tca[TCA_ACT_MAX + 1];
u32 pid = skb ? NETLINK_CB(skb).pid : 0;
u32 portid = skb ? NETLINK_CB(skb).portid : 0;
int ret = 0, ovr = 0;
ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
@ -1008,17 +1008,17 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
if (n->nlmsg_flags & NLM_F_REPLACE)
ovr = 1;
replay:
ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, pid, ovr);
ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, portid, ovr);
if (ret == -EAGAIN)
goto replay;
break;
case RTM_DELACTION:
ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
pid, RTM_DELACTION);
portid, RTM_DELACTION);
break;
case RTM_GETACTION:
ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
pid, RTM_GETACTION);
portid, RTM_GETACTION);
break;
default:
BUG();
@ -1085,7 +1085,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
goto out_module_put;
}
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
cb->nlh->nlmsg_type, sizeof(*t), 0);
if (!nlh)
goto out_module_put;
@ -1109,7 +1109,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
nla_nest_cancel(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
if (NETLINK_CB(cb->skb).pid && ret)
if (NETLINK_CB(cb->skb).portid && ret)
nlh->nlmsg_flags |= NLM_F_MULTI;
module_put(a_o->owner);
return skb->len;