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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
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26
net/nfc/netlink.c
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@@ -58,7 +58,7 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
{
void *hdr;
hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
&nfc_genl_family, flags, NFC_CMD_GET_TARGET);
if (!hdr)
return -EMSGSIZE;
@@ -165,7 +165,7 @@ int nfc_genl_targets_found(struct nfc_dev *dev)
struct sk_buff *msg;
void *hdr;
dev->genl_data.poll_req_pid = 0;
dev->genl_data.poll_req_portid = 0;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!msg)
@@ -347,13 +347,13 @@ free_msg:
}
static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
u32 pid, u32 seq,
u32 portid, u32 seq,
struct netlink_callback *cb,
int flags)
{
void *hdr;
hdr = genlmsg_put(msg, pid, seq, &nfc_genl_family, flags,
hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
NFC_CMD_GET_DEVICE);
if (!hdr)
return -EMSGSIZE;
@@ -401,7 +401,7 @@ static int nfc_genl_dump_devices(struct sk_buff *skb,
while (dev) {
int rc;
rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).pid,
rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
if (rc < 0)
break;
@@ -520,7 +520,7 @@ static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
goto out_putdev;
}
rc = nfc_genl_send_device(msg, dev, info->snd_pid, info->snd_seq,
rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
NULL, 0);
if (rc < 0)
goto out_free;
@@ -611,7 +611,7 @@ static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
rc = nfc_start_poll(dev, im_protocols, tm_protocols);
if (!rc)
dev->genl_data.poll_req_pid = info->snd_pid;
dev->genl_data.poll_req_portid = info->snd_portid;
mutex_unlock(&dev->genl_data.genl_data_mutex);
@@ -645,13 +645,13 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
mutex_lock(&dev->genl_data.genl_data_mutex);
if (dev->genl_data.poll_req_pid != info->snd_pid) {
if (dev->genl_data.poll_req_portid != info->snd_portid) {
rc = -EBUSY;
goto out;
}
rc = nfc_stop_poll(dev);
dev->genl_data.poll_req_pid = 0;
dev->genl_data.poll_req_portid = 0;
out:
mutex_unlock(&dev->genl_data.genl_data_mutex);
@@ -771,15 +771,15 @@ static int nfc_genl_rcv_nl_event(struct notifier_block *this,
if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
goto out;
pr_debug("NETLINK_URELEASE event from id %d\n", n->pid);
pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
nfc_device_iter_init(&iter);
dev = nfc_device_iter_next(&iter);
while (dev) {
if (dev->genl_data.poll_req_pid == n->pid) {
if (dev->genl_data.poll_req_portid == n->portid) {
nfc_stop_poll(dev);
dev->genl_data.poll_req_pid = 0;
dev->genl_data.poll_req_portid = 0;
}
dev = nfc_device_iter_next(&iter);
}
@@ -792,7 +792,7 @@ out:
void nfc_genl_data_init(struct nfc_genl_data *genl_data)
{
genl_data->poll_req_pid = 0;
genl_data->poll_req_portid = 0;
mutex_init(&genl_data->genl_data_mutex);
}