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pktgen: Fix netdevice unregister 

When multi queue compatable names are used by pktgen (eg eth0@0),
we currently cannot unload a NIC driver if one of its device
is currently in use.

Allow pktgen_find_dev() to find pktgen devices by their suffix (netdev name)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2009-11-24 14:50:53 -08:00 committed by David S. Miller
parent 8c2acc53fd
commit 3e9848403a
1 changed files with 11 additions and 5 deletions
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16
net/core/pktgen.c
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@ -427,7 +427,7 @@ static const char version[] =
static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
const char *ifname);
const char *ifname, bool exact);
static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
static void pktgen_run_all_threads(void);
static void pktgen_reset_all_threads(void);
@ -1818,9 +1818,10 @@ static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
{
struct pktgen_thread *t;
struct pktgen_dev *pkt_dev = NULL;
bool exact = (remove == FIND);
list_for_each_entry(t, &pktgen_threads, th_list) {
pkt_dev = pktgen_find_dev(t, ifname);
pkt_dev = pktgen_find_dev(t, ifname, exact);
if (pkt_dev) {
if (remove) {
if_lock(t);
@ -3567,13 +3568,18 @@ static int pktgen_thread_worker(void *arg)
}
static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
const char *ifname)
const char *ifname, bool exact)
{
struct pktgen_dev *p, *pkt_dev = NULL;
if_lock(t);
size_t len = strlen(ifname);
if_lock(t);
list_for_each_entry(p, &t->if_list, list)
if (strncmp(p->odevname, ifname, IFNAMSIZ) == 0) {
if (strncmp(p->odevname, ifname, len) == 0) {
if (p->odevname[len]) {
if (exact || p->odevname[len] != '@')
continue;
}
pkt_dev = p;
break;
}