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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

44
net/sched/sch_api.c
View File

@@ -1185,7 +1185,7 @@ graft:
}
static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
u32 pid, u32 seq, u16 flags, int event)
u32 portid, u32 seq, u16 flags, int event)
{
struct tcmsg *tcm;
struct nlmsghdr *nlh;
@@ -1193,7 +1193,7 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
struct gnet_dump d;
struct qdisc_size_table *stab;
nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
if (!nlh)
goto out_nlmsg_trim;
tcm = nlmsg_data(nlh);
@@ -1248,25 +1248,25 @@ static int qdisc_notify(struct net *net, struct sk_buff *oskb,
struct Qdisc *old, struct Qdisc *new)
{
struct sk_buff *skb;
u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (old && !tc_qdisc_dump_ignore(old)) {
if (tc_fill_qdisc(skb, old, clid, pid, n->nlmsg_seq,
if (tc_fill_qdisc(skb, old, clid, portid, n->nlmsg_seq,
0, RTM_DELQDISC) < 0)
goto err_out;
}
if (new && !tc_qdisc_dump_ignore(new)) {
if (tc_fill_qdisc(skb, new, clid, pid, n->nlmsg_seq,
if (tc_fill_qdisc(skb, new, clid, portid, n->nlmsg_seq,
old ? NLM_F_REPLACE : 0, RTM_NEWQDISC) < 0)
goto err_out;
}
if (skb->len)
return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
err_out:
@@ -1289,7 +1289,7 @@ static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
q_idx++;
} else {
if (!tc_qdisc_dump_ignore(q) &&
tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
goto done;
q_idx++;
@@ -1300,7 +1300,7 @@ static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
continue;
}
if (!tc_qdisc_dump_ignore(q) &&
tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
goto done;
q_idx++;
@@ -1375,7 +1375,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
const struct Qdisc_class_ops *cops;
unsigned long cl = 0;
unsigned long new_cl;
u32 pid = tcm->tcm_parent;
u32 portid = tcm->tcm_parent;
u32 clid = tcm->tcm_handle;
u32 qid = TC_H_MAJ(clid);
int err;
@@ -1403,8 +1403,8 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* Step 1. Determine qdisc handle X:0 */
if (pid != TC_H_ROOT) {
u32 qid1 = TC_H_MAJ(pid);
if (portid != TC_H_ROOT) {
u32 qid1 = TC_H_MAJ(portid);
if (qid && qid1) {
/* If both majors are known, they must be identical. */
@@ -1418,10 +1418,10 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* Now qid is genuine qdisc handle consistent
* both with parent and child.
*
* TC_H_MAJ(pid) still may be unspecified, complete it now.
* TC_H_MAJ(portid) still may be unspecified, complete it now.
*/
if (pid)
pid = TC_H_MAKE(qid, pid);
if (portid)
portid = TC_H_MAKE(qid, portid);
} else {
if (qid == 0)
qid = dev->qdisc->handle;
@@ -1439,7 +1439,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* Now try to get class */
if (clid == 0) {
if (pid == TC_H_ROOT)
if (portid == TC_H_ROOT)
clid = qid;
} else
clid = TC_H_MAKE(qid, clid);
@@ -1478,7 +1478,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
new_cl = cl;
err = -EOPNOTSUPP;
if (cops->change)
err = cops->change(q, clid, pid, tca, &new_cl);
err = cops->change(q, clid, portid, tca, &new_cl);
if (err == 0)
tclass_notify(net, skb, n, q, new_cl, RTM_NEWTCLASS);
@@ -1492,7 +1492,7 @@ out:
static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
unsigned long cl,
u32 pid, u32 seq, u16 flags, int event)
u32 portid, u32 seq, u16 flags, int event)
{
struct tcmsg *tcm;
struct nlmsghdr *nlh;
@@ -1500,7 +1500,7 @@ static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
struct gnet_dump d;
const struct Qdisc_class_ops *cl_ops = q->ops->cl_ops;
nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
if (!nlh)
goto out_nlmsg_trim;
tcm = nlmsg_data(nlh);
@@ -1540,18 +1540,18 @@ static int tclass_notify(struct net *net, struct sk_buff *oskb,
unsigned long cl, int event)
{
struct sk_buff *skb;
u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (tc_fill_tclass(skb, q, cl, pid, n->nlmsg_seq, 0, event) < 0) {
if (tc_fill_tclass(skb, q, cl, portid, n->nlmsg_seq, 0, event) < 0) {
kfree_skb(skb);
return -EINVAL;
}
return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
}
@@ -1565,7 +1565,7 @@ static int qdisc_class_dump(struct Qdisc *q, unsigned long cl, struct qdisc_walk
{
struct qdisc_dump_args *a = (struct qdisc_dump_args *)arg;
return tc_fill_tclass(a->skb, q, cl, NETLINK_CB(a->cb->skb).pid,
return tc_fill_tclass(a->skb, q, cl, NETLINK_CB(a->cb->skb).portid,
a->cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWTCLASS);
}