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target/iscsi: Replace conn->login_ip with login_sockaddr

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Very similar to how it went with local_sockaddr.

It was embedded in iscsi_login_stats so some changes there, and we needed
to copy in a sockaddr_storage comparison function. Hopefully the kernel
will get a standard one soon, our implementation makes the 3rd.

isert_set_conn_info() became much smaller.

IPV6_ADDRESS_SPACE define goes away, had to modify a call to in6_pton(),
can just use -1 since we are sure string is null-terminated.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Andy Grover 2015-08-24 10:26:05 -07:00 committed by Nicholas Bellinger
parent 69d755747d
commit dc58f760e2
7 changed files with 53 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/infiniband/ulp/isert/ib_isert.c
View File

@ -3206,28 +3206,11 @@ isert_set_conn_info(struct iscsi_np *np, struct iscsi_conn *conn,
{
struct rdma_cm_id *cm_id = isert_conn->cm_id;
struct rdma_route *cm_route = &cm_id->route;
struct sockaddr_in *sock_in;
struct sockaddr_in6 *sock_in6;
conn->login_family = np->np_sockaddr.ss_family;
if (np->np_sockaddr.ss_family == AF_INET6) {
sock_in6 = (struct sockaddr_in6 *)&cm_route->addr.dst_addr;
snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI6c",
&sock_in6->sin6_addr.in6_u);
conn->login_port = ntohs(sock_in6->sin6_port);
sock_in6 = (struct sockaddr_in6 *)&cm_route->addr.src_addr;
memcpy(&conn->local_sockaddr , &sock_in6, sizeof(sock_in6));
} else {
sock_in = (struct sockaddr_in *)&cm_route->addr.dst_addr;
sprintf(conn->login_ip, "%pI4",
&sock_in->sin_addr.s_addr);
conn->login_port = ntohs(sock_in->sin_port);
sock_in = (struct sockaddr_in *)&cm_route->addr.src_addr;
memcpy(&conn->local_sockaddr , &sock_in, sizeof(sock_in));
}
conn->login_sockaddr = cm_route->addr.dst_addr;
conn->local_sockaddr = cm_route->addr.src_addr;
}
static int

4
drivers/target/iscsi/iscsi_target_configfs.c
View File

@ -267,7 +267,7 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
sock_in6 = (struct sockaddr_in6 *)&sockaddr;
sock_in6->sin6_family = AF_INET6;
sock_in6->sin6_port = htons((unsigned short)port);
ret = in6_pton(str, IPV6_ADDRESS_SPACE,
ret = in6_pton(str, -1,
(void *)&sock_in6->sin6_addr.in6_u, -1, &end);
if (ret <= 0) {
pr_err("in6_pton returned: %d\n", ret);
@ -753,7 +753,7 @@ static ssize_t lio_target_nacl_show_info(
break;
}
rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
rb += sprintf(page+rb, " Address %pISc %s", &conn->login_sockaddr,
(conn->network_transport == ISCSI_TCP) ?
"TCP" : "SCTP");
rb += sprintf(page+rb, " StatSN: 0x%08x\n",

35
drivers/target/iscsi/iscsi_target_login.c
View File

@ -728,8 +728,8 @@ int iscsi_post_login_handler(
stop_timer = 1;
}
pr_debug("iSCSI Login successful on CID: %hu from %s to"
" %pISpc,%hu\n", conn->cid, conn->login_ip,
pr_debug("iSCSI Login successful on CID: %hu from %pISpc to"
" %pISpc,%hu\n", conn->cid, &conn->login_sockaddr,
&conn->local_sockaddr, tpg->tpgt);
list_add_tail(&conn->conn_list, &sess->sess_conn_list);
@ -774,8 +774,8 @@ int iscsi_post_login_handler(
pr_debug("Moving to TARG_SESS_STATE_LOGGED_IN.\n");
sess->session_state = TARG_SESS_STATE_LOGGED_IN;
pr_debug("iSCSI Login successful on CID: %hu from %s to %pISpc,%hu\n",
conn->cid, conn->login_ip, &conn->local_sockaddr,
pr_debug("iSCSI Login successful on CID: %hu from %pISpc to %pISpc,%hu\n",
conn->cid, &conn->login_sockaddr, &conn->local_sockaddr,
tpg->tpgt);
spin_lock_bh(&sess->conn_lock);
@ -1015,13 +1015,15 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
rc = conn->sock->ops->getname(conn->sock,
(struct sockaddr *)&sock_in6, &err, 1);
if (!rc) {
if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr))
snprintf(conn->login_ip, sizeof(conn->login_ip), "[%pI6c]",
&sock_in6.sin6_addr.in6_u);
else
snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI4",
&sock_in6.sin6_addr.s6_addr32[3]);
conn->login_port = ntohs(sock_in6.sin6_port);
if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr)) {
memcpy(&conn->login_sockaddr, &sock_in6, sizeof(sock_in6));
} else {
/* Pretend to be an ipv4 socket */
sock_in.sin_family = AF_INET;
sock_in.sin_port = sock_in6.sin6_port;
memcpy(&sock_in.sin_addr, &sock_in6.sin6_addr.s6_addr32[3], 4);
memcpy(&conn->login_sockaddr, &sock_in, sizeof(sock_in));
}
}
rc = conn->sock->ops->getname(conn->sock,
@ -1042,11 +1044,8 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
rc = conn->sock->ops->getname(conn->sock,
(struct sockaddr *)&sock_in, &err, 1);
if (!rc) {
sprintf(conn->login_ip, "%pI4",
&sock_in.sin_addr.s_addr);
conn->login_port = ntohs(sock_in.sin_port);
}
if (!rc)
memcpy(&conn->login_sockaddr, &sock_in, sizeof(sock_in));
rc = conn->sock->ops->getname(conn->sock,
(struct sockaddr *)&sock_in, &err, 0);
@ -1311,8 +1310,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
conn->network_transport = np->np_network_transport;
pr_debug("Received iSCSI login request from %s on %s Network"
" Portal %pISpc\n", conn->login_ip, np->np_transport->name,
pr_debug("Received iSCSI login request from %pISpc on %s Network"
" Portal %pISpc\n", &conn->login_sockaddr, np->np_transport->name,
&conn->local_sockaddr);
pr_debug("Moving to TARG_CONN_STATE_IN_LOGIN.\n");

2
drivers/target/iscsi/iscsi_target_stat.c
View File

@ -430,7 +430,7 @@ static ssize_t iscsi_stat_tgt_attr_show_attr_fail_intr_addr(
int ret;
spin_lock(&lstat->lock);
ret = snprintf(page, PAGE_SIZE, "%s\n", lstat->last_intr_fail_ip_addr);
ret = snprintf(page, PAGE_SIZE, "%pISc\n", &lstat->last_intr_fail_sockaddr);
spin_unlock(&lstat->lock);
return ret;

32
drivers/target/iscsi/iscsi_target_util.c
View File

@ -1372,6 +1372,33 @@ int tx_data(
return iscsit_do_tx_data(conn, &c);
}
static bool sockaddr_equal(struct sockaddr_storage *x, struct sockaddr_storage *y)
{
switch (x->ss_family) {
case AF_INET: {
struct sockaddr_in *sinx = (struct sockaddr_in *)x;
struct sockaddr_in *siny = (struct sockaddr_in *)y;
if (sinx->sin_addr.s_addr != siny->sin_addr.s_addr)
return false;
if (sinx->sin_port != siny->sin_port)
return false;
break;
}
case AF_INET6: {
struct sockaddr_in6 *sinx = (struct sockaddr_in6 *)x;
struct sockaddr_in6 *siny = (struct sockaddr_in6 *)y;
if (!ipv6_addr_equal(&sinx->sin6_addr, &siny->sin6_addr))
return false;
if (sinx->sin6_port != siny->sin6_port)
return false;
break;
}
default:
return false;
}
return true;
}
void iscsit_collect_login_stats(
struct iscsi_conn *conn,
u8 status_class,
@ -1388,7 +1415,7 @@ void iscsit_collect_login_stats(
ls = &tiqn->login_stats;
spin_lock(&ls->lock);
if (!strcmp(conn->login_ip, ls->last_intr_fail_ip_addr) &&
if (sockaddr_equal(&conn->login_sockaddr, &ls->last_intr_fail_sockaddr) &&
((get_jiffies_64() - ls->last_fail_time) < 10)) {
/* We already have the failure info for this login */
spin_unlock(&ls->lock);
@ -1428,8 +1455,7 @@ void iscsit_collect_login_stats(
ls->last_intr_fail_ip_family = conn->login_family;
snprintf(ls->last_intr_fail_ip_addr, IPV6_ADDRESS_SPACE,
"%s", conn->login_ip);
ls->last_intr_fail_sockaddr = conn->login_sockaddr;
ls->last_fail_time = get_jiffies_64();
}

3
include/target/iscsi/iscsi_target_core.h
View File

@ -528,8 +528,7 @@ struct iscsi_conn {
u32 exp_statsn;
/* Per connection status sequence number */
u32 stat_sn;
#define IPV6_ADDRESS_SPACE 48
unsigned char login_ip[IPV6_ADDRESS_SPACE];
struct __kernel_sockaddr_storage login_sockaddr;
struct __kernel_sockaddr_storage local_sockaddr;
int conn_usage_count;
int conn_waiting_on_uc;

2
include/target/iscsi/iscsi_target_stat.h
View File

@ -50,7 +50,7 @@ struct iscsi_login_stats {
u64 last_fail_time; /* time stamp (jiffies) */
u32 last_fail_type;
int last_intr_fail_ip_family;
unsigned char last_intr_fail_ip_addr[IPV6_ADDRESS_SPACE];
struct __kernel_sockaddr_storage last_intr_fail_sockaddr;
char last_intr_fail_name[224];
} ____cacheline_aligned;