[PATCH 5/6] scsi: replace obsolete NLMSG_* with type safe nlmsg_*

From: Hong Zhiguo
Date: Wed Mar 27 2013 - 12:53:32 EST

Signed-off-by: Hong Zhiguo <honkiko@xxxxxxxxx>
---
drivers/scsi/scsi_netlink.c | 4 +--
drivers/scsi/scsi_transport_fc.c | 21 +++++--------
drivers/scsi/scsi_transport_iscsi.c | 56 +++++++++++++++++------------------
3 files changed, 38 insertions(+), 43 deletions(-)

diff --git a/drivers/scsi/scsi_netlink.c b/drivers/scsi/scsi_netlink.c
index 65123a2..fe30ea9 100644
--- a/drivers/scsi/scsi_netlink.c
+++ b/drivers/scsi/scsi_netlink.c
@@ -50,7 +50,7 @@ scsi_nl_rcv_msg(struct sk_buff *skb)
u32 rlen;
int err, tport;

- while (skb->len >= NLMSG_SPACE(0)) {
+ while (skb->len >= NLMSG_HDRLEN) {
err = 0;

nlh = nlmsg_hdr(skb);
@@ -70,7 +70,7 @@ scsi_nl_rcv_msg(struct sk_buff *skb)
goto next_msg;
}

- hdr = NLMSG_DATA(nlh);
+ hdr = nlmsg_data(nlh);
if ((hdr->version != SCSI_NL_VERSION) ||
(hdr->magic != SCSI_NL_MAGIC)) {
err = -EPROTOTYPE;
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index e894ca7..e106c27 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -35,7 +35,6 @@
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_cmnd.h>
-#include <linux/netlink.h>
#include <net/netlink.h>
#include <scsi/scsi_netlink_fc.h>
#include <scsi/scsi_bsg_fc.h>
@@ -534,7 +533,7 @@ fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
struct nlmsghdr *nlh;
struct fc_nl_event *event;
const char *name;
- u32 len, skblen;
+ u32 len;
int err;

if (!scsi_nl_sock) {
@@ -543,21 +542,19 @@ fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
}

len = FC_NL_MSGALIGN(sizeof(*event));
- skblen = NLMSG_SPACE(len);

- skb = alloc_skb(skblen, GFP_KERNEL);
+ skb = nlmsg_new(len, GFP_KERNEL);
if (!skb) {
err = -ENOBUFS;
goto send_fail;
}

- nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG,
- skblen - sizeof(*nlh), 0);
+ nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0);
if (!nlh) {
err = -ENOBUFS;
goto send_fail_skb;
}
- event = NLMSG_DATA(nlh);
+ event = nlmsg_data(nlh);

INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC,
FC_NL_ASYNC_EVENT, len);
@@ -604,7 +601,7 @@ fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
struct sk_buff *skb;
struct nlmsghdr *nlh;
struct fc_nl_event *event;
- u32 len, skblen;
+ u32 len;
int err;

if (!scsi_nl_sock) {
@@ -613,21 +610,19 @@ fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
}

len = FC_NL_MSGALIGN(sizeof(*event) + data_len);
- skblen = NLMSG_SPACE(len);

- skb = alloc_skb(skblen, GFP_KERNEL);
+ skb = nlmsg_new(len, GFP_KERNEL);
if (!skb) {
err = -ENOBUFS;
goto send_vendor_fail;
}

- nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG,
- skblen - sizeof(*nlh), 0);
+ nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0);
if (!nlh) {
err = -ENOBUFS;
goto send_vendor_fail_skb;
}
- event = NLMSG_DATA(nlh);
+ event = nlmsg_data(nlh);

INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC,
FC_NL_ASYNC_EVENT, len);
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 0a74b97..4de39e4 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1344,7 +1344,7 @@ int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
struct iscsi_uevent *ev;
char *pdu;
struct iscsi_internal *priv;
- int len = NLMSG_SPACE(sizeof(*ev) + sizeof(struct iscsi_hdr) +
+ int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) +
data_size);

priv = iscsi_if_transport_lookup(conn->transport);
@@ -1360,7 +1360,7 @@ int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
memset(ev, 0, sizeof(*ev));
ev->transport_handle = iscsi_handle(conn->transport);
ev->type = ISCSI_KEVENT_RECV_PDU;
@@ -1381,7 +1381,7 @@ int iscsi_offload_mesg(struct Scsi_Host *shost,
struct nlmsghdr *nlh;
struct sk_buff *skb;
struct iscsi_uevent *ev;
- int len = NLMSG_SPACE(sizeof(*ev) + data_size);
+ int len = nlmsg_total_size(sizeof(*ev) + data_size);

skb = alloc_skb(len, GFP_ATOMIC);
if (!skb) {
@@ -1390,7 +1390,7 @@ int iscsi_offload_mesg(struct Scsi_Host *shost,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
memset(ev, 0, sizeof(*ev));
ev->type = type;
ev->transport_handle = iscsi_handle(transport);
@@ -1415,7 +1415,7 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
struct sk_buff *skb;
struct iscsi_uevent *ev;
struct iscsi_internal *priv;
- int len = NLMSG_SPACE(sizeof(*ev));
+ int len = nlmsg_total_size(sizeof(*ev));

priv = iscsi_if_transport_lookup(conn->transport);
if (!priv)
@@ -1429,7 +1429,7 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
ev->transport_handle = iscsi_handle(conn->transport);
ev->type = ISCSI_KEVENT_CONN_ERROR;
ev->r.connerror.error = error;
@@ -1450,7 +1450,7 @@ void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
struct sk_buff *skb;
struct iscsi_uevent *ev;
struct iscsi_internal *priv;
- int len = NLMSG_SPACE(sizeof(*ev));
+ int len = nlmsg_total_size(sizeof(*ev));

priv = iscsi_if_transport_lookup(conn->transport);
if (!priv)
@@ -1464,7 +1464,7 @@ void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
ev->transport_handle = iscsi_handle(conn->transport);
ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE;
ev->r.conn_login.state = state;
@@ -1484,7 +1484,7 @@ void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport,
struct nlmsghdr *nlh;
struct sk_buff *skb;
struct iscsi_uevent *ev;
- int len = NLMSG_SPACE(sizeof(*ev) + data_size);
+ int len = nlmsg_total_size(sizeof(*ev) + data_size);

skb = alloc_skb(len, GFP_NOIO);
if (!skb) {
@@ -1494,7 +1494,7 @@ void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
ev->transport_handle = iscsi_handle(transport);
ev->type = ISCSI_KEVENT_HOST_EVENT;
ev->r.host_event.host_no = host_no;
@@ -1515,7 +1515,7 @@ void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport,
struct nlmsghdr *nlh;
struct sk_buff *skb;
struct iscsi_uevent *ev;
- int len = NLMSG_SPACE(sizeof(*ev) + data_size);
+ int len = nlmsg_total_size(sizeof(*ev) + data_size);

skb = alloc_skb(len, GFP_NOIO);
if (!skb) {
@@ -1524,7 +1524,7 @@ void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
ev->transport_handle = iscsi_handle(transport);
ev->type = ISCSI_KEVENT_PING_COMP;
ev->r.ping_comp.host_no = host_no;
@@ -1543,7 +1543,7 @@ iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi,
{
struct sk_buff *skb;
struct nlmsghdr *nlh;
- int len = NLMSG_SPACE(size);
+ int len = nlmsg_total_size(size);
int flags = multi ? NLM_F_MULTI : 0;
int t = done ? NLMSG_DONE : type;

@@ -1555,21 +1555,21 @@ iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi,

nlh = __nlmsg_put(skb, 0, 0, t, (len - sizeof(*nlh)), 0);
nlh->nlmsg_flags = flags;
- memcpy(NLMSG_DATA(nlh), payload, size);
+ memcpy(nlmsg_data(nlh), payload, size);
return iscsi_multicast_skb(skb, group, GFP_ATOMIC);
}

static int
iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
{
- struct iscsi_uevent *ev = NLMSG_DATA(nlh);
+ struct iscsi_uevent *ev = nlmsg_data(nlh);
struct iscsi_stats *stats;
struct sk_buff *skbstat;
struct iscsi_cls_conn *conn;
struct nlmsghdr *nlhstat;
struct iscsi_uevent *evstat;
struct iscsi_internal *priv;
- int len = NLMSG_SPACE(sizeof(*ev) +
+ int len = nlmsg_total_size(sizeof(*ev) +
sizeof(struct iscsi_stats) +
sizeof(struct iscsi_stats_custom) *
ISCSI_STATS_CUSTOM_MAX);
@@ -1595,7 +1595,7 @@ iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)

nlhstat = __nlmsg_put(skbstat, 0, 0, 0,
(len - sizeof(*nlhstat)), 0);
- evstat = NLMSG_DATA(nlhstat);
+ evstat = nlmsg_data(nlhstat);
memset(evstat, 0, sizeof(*evstat));
evstat->transport_handle = iscsi_handle(conn->transport);
evstat->type = nlh->nlmsg_type;
@@ -1608,12 +1608,12 @@ iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
memset(stats, 0, sizeof(*stats));

transport->get_stats(conn, stats);
- actual_size = NLMSG_SPACE(sizeof(struct iscsi_uevent) +
+ actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) +
sizeof(struct iscsi_stats) +
sizeof(struct iscsi_stats_custom) *
stats->custom_length);
actual_size -= sizeof(*nlhstat);
- actual_size = NLMSG_LENGTH(actual_size);
+ actual_size = nlmsg_msg_size(actual_size);
skb_trim(skbstat, NLMSG_ALIGN(actual_size));
nlhstat->nlmsg_len = actual_size;

@@ -1637,7 +1637,7 @@ int iscsi_session_event(struct iscsi_cls_session *session,
struct iscsi_uevent *ev;
struct sk_buff *skb;
struct nlmsghdr *nlh;
- int rc, len = NLMSG_SPACE(sizeof(*ev));
+ int rc, len = nlmsg_total_size(sizeof(*ev));

priv = iscsi_if_transport_lookup(session->transport);
if (!priv)
@@ -1653,7 +1653,7 @@ int iscsi_session_event(struct iscsi_cls_session *session,
}

nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
ev->transport_handle = iscsi_handle(session->transport);

ev->type = event;
@@ -2005,7 +2005,7 @@ iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev)
static int
iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
{
- struct iscsi_uevent *ev = NLMSG_DATA(nlh);
+ struct iscsi_uevent *ev = nlmsg_data(nlh);
struct Scsi_Host *shost = NULL;
struct iscsi_chap_rec *chap_rec;
struct iscsi_internal *priv;
@@ -2024,7 +2024,7 @@ iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
return -EINVAL;

chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec));
- len = NLMSG_SPACE(sizeof(*ev) + chap_buf_size);
+ len = nlmsg_total_size(sizeof(*ev) + chap_buf_size);

shost = scsi_host_lookup(ev->u.get_chap.host_no);
if (!shost) {
@@ -2045,7 +2045,7 @@ iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)

nlhchap = __nlmsg_put(skbchap, 0, 0, 0,
(len - sizeof(*nlhchap)), 0);
- evchap = NLMSG_DATA(nlhchap);
+ evchap = nlmsg_data(nlhchap);
memset(evchap, 0, sizeof(*evchap));
evchap->transport_handle = iscsi_handle(transport);
evchap->type = nlh->nlmsg_type;
@@ -2058,7 +2058,7 @@ iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx,
&evchap->u.get_chap.num_entries, buf);

- actual_size = NLMSG_SPACE(sizeof(*ev) + chap_buf_size);
+ actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size);
skb_trim(skbchap, NLMSG_ALIGN(actual_size));
nlhchap->nlmsg_len = actual_size;

@@ -2096,7 +2096,7 @@ static int
iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
{
int err = 0;
- struct iscsi_uevent *ev = NLMSG_DATA(nlh);
+ struct iscsi_uevent *ev = nlmsg_data(nlh);
struct iscsi_transport *transport = NULL;
struct iscsi_internal *priv;
struct iscsi_cls_session *session;
@@ -2263,7 +2263,7 @@ static void
iscsi_if_rx(struct sk_buff *skb)
{
mutex_lock(&rx_queue_mutex);
- while (skb->len >= NLMSG_SPACE(0)) {
+ while (skb->len >= NLMSG_HDRLEN) {
int err;
uint32_t rlen;
struct nlmsghdr *nlh;
@@ -2276,7 +2276,7 @@ iscsi_if_rx(struct sk_buff *skb)
break;
}

- ev = NLMSG_DATA(nlh);
+ ev = nlmsg_data(nlh);
rlen = NLMSG_ALIGN(nlh->nlmsg_len);
if (rlen > skb->len)
rlen = skb->len;
--
1.7.10.4

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