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Fix code so that buf_ring allocation for Tx Queues and their mutexes

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is done during during bxe_attach() and freed during bxe_detach()

MFC after: 5 days
This commit is contained in:
David C Somayajulu 2016-03-09 21:12:26 +00:00
parent 6dbe471130
commit 988f26f9ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=296579
1 changed files with 119 additions and 28 deletions
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147
sys/dev/bxe/bxe.c
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@ -669,6 +669,8 @@ static void bxe_handle_fp_tq(void *context, int pending);
static int bxe_add_cdev(struct bxe_softc *sc);
static void bxe_del_cdev(struct bxe_softc *sc);
static int bxe_grc_dump(struct bxe_softc *sc);
static int bxe_alloc_buf_rings(struct bxe_softc *sc);
static void bxe_free_buf_rings(struct bxe_softc *sc);
/* calculate crc32 on a buffer (NOTE: crc32_length MUST be aligned to 8) */
uint32_t
@ -4193,9 +4195,20 @@ bxe_nic_unload(struct bxe_softc *sc,
{
uint8_t global = FALSE;
uint32_t val;
int i;
BXE_CORE_LOCK_ASSERT(sc);
if_setdrvflagbits(sc->ifp, 0, IFF_DRV_RUNNING);
for (i = 0; i < sc->num_queues; i++) {
struct bxe_fastpath *fp;
fp = &sc->fp[i];
BXE_FP_TX_LOCK(fp);
BXE_FP_TX_UNLOCK(fp);
}
BLOGD(sc, DBG_LOAD, "Starting NIC unload...\n");
/* mark driver as unloaded in shmem2 */
@ -5726,7 +5739,7 @@ bxe_tx_mq_start_locked(struct bxe_softc *sc,
}
if (!sc->link_vars.link_up ||
(ifp->if_drv_flags &
(if_getdrvflags(ifp) &
(IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING) {
rc = drbr_enqueue_drv(ifp, tx_br, m);
goto bxe_tx_mq_start_locked_exit;
@ -6239,8 +6252,6 @@ bxe_free_fp_buffers(struct bxe_softc *sc)
m_freem(m);
BXE_FP_TX_UNLOCK(fp);
}
buf_ring_free(fp->tx_br, M_DEVBUF);
fp->tx_br = NULL;
}
#endif
@ -6270,14 +6281,6 @@ bxe_free_fp_buffers(struct bxe_softc *sc)
}
/* XXX verify all mbufs were reclaimed */
if (mtx_initialized(&fp->tx_mtx)) {
mtx_destroy(&fp->tx_mtx);
}
if (mtx_initialized(&fp->rx_mtx)) {
mtx_destroy(&fp->rx_mtx);
}
}
}
@ -6499,15 +6502,6 @@ bxe_alloc_fp_buffers(struct bxe_softc *sc)
for (i = 0; i < sc->num_queues; i++) {
fp = &sc->fp[i];
#if __FreeBSD_version >= 800000
fp->tx_br = buf_ring_alloc(BXE_BR_SIZE, M_DEVBUF,
M_NOWAIT, &fp->tx_mtx);
if (fp->tx_br == NULL) {
BLOGE(sc, "buf_ring alloc fail for fp[%02d]\n", i);
goto bxe_alloc_fp_buffers_error;
}
#endif
ring_prod = cqe_ring_prod = 0;
fp->rx_bd_cons = 0;
fp->rx_cq_cons = 0;
@ -9615,14 +9609,6 @@ bxe_init_eth_fp(struct bxe_softc *sc,
fp->sc = sc;
fp->index = idx;
snprintf(fp->tx_mtx_name, sizeof(fp->tx_mtx_name),
"bxe%d_fp%d_tx_lock", sc->unit, idx);
mtx_init(&fp->tx_mtx, fp->tx_mtx_name, NULL, MTX_DEF);
snprintf(fp->rx_mtx_name, sizeof(fp->rx_mtx_name),
"bxe%d_fp%d_rx_lock", sc->unit, idx);
mtx_init(&fp->rx_mtx, fp->rx_mtx_name, NULL, MTX_DEF);
fp->igu_sb_id = (sc->igu_base_sb + idx + CNIC_SUPPORT(sc));
fp->fw_sb_id = (sc->base_fw_ndsb + idx + CNIC_SUPPORT(sc));
@ -15788,6 +15774,89 @@ bxe_add_sysctls(struct bxe_softc *sc)
}
}
static int
bxe_alloc_buf_rings(struct bxe_softc *sc)
{
#if __FreeBSD_version >= 800000
int i;
struct bxe_fastpath *fp;
for (i = 0; i < sc->num_queues; i++) {
fp = &sc->fp[i];
fp->tx_br = buf_ring_alloc(BXE_BR_SIZE, M_DEVBUF,
M_NOWAIT, &fp->tx_mtx);
if (fp->tx_br == NULL)
return (-1);
}
#endif
return (0);
}
static void
bxe_free_buf_rings(struct bxe_softc *sc)
{
#if __FreeBSD_version >= 800000
int i;
struct bxe_fastpath *fp;
for (i = 0; i < sc->num_queues; i++) {
fp = &sc->fp[i];
if (fp->tx_br) {
buf_ring_free(fp->tx_br, M_DEVBUF);
fp->tx_br = NULL;
}
}
#endif
}
static void
bxe_init_fp_mutexs(struct bxe_softc *sc)
{
int i;
struct bxe_fastpath *fp;
for (i = 0; i < sc->num_queues; i++) {
fp = &sc->fp[i];
snprintf(fp->tx_mtx_name, sizeof(fp->tx_mtx_name),
"bxe%d_fp%d_tx_lock", sc->unit, i);
mtx_init(&fp->tx_mtx, fp->tx_mtx_name, NULL, MTX_DEF);
snprintf(fp->rx_mtx_name, sizeof(fp->rx_mtx_name),
"bxe%d_fp%d_rx_lock", sc->unit, i);
mtx_init(&fp->rx_mtx, fp->rx_mtx_name, NULL, MTX_DEF);
}
}
static void
bxe_destroy_fp_mutexs(struct bxe_softc *sc)
{
int i;
struct bxe_fastpath *fp;
for (i = 0; i < sc->num_queues; i++) {
fp = &sc->fp[i];
if (mtx_initialized(&fp->tx_mtx)) {
mtx_destroy(&fp->tx_mtx);
}
if (mtx_initialized(&fp->rx_mtx)) {
mtx_destroy(&fp->rx_mtx);
}
}
}
/*
* Device attach function.
*
@ -15899,8 +15968,25 @@ bxe_attach(device_t dev)
return (ENXIO);
}
bxe_init_fp_mutexs(sc);
if (bxe_alloc_buf_rings(sc) != 0) {
bxe_free_buf_rings(sc);
bxe_interrupt_free(sc);
bxe_del_cdev(sc);
if (sc->ifp != NULL) {
ether_ifdetach(sc->ifp);
}
ifmedia_removeall(&sc->ifmedia);
bxe_release_mutexes(sc);
bxe_deallocate_bars(sc);
pci_disable_busmaster(dev);
return (ENXIO);
}
/* allocate ilt */
if (bxe_alloc_ilt_mem(sc) != 0) {
bxe_free_buf_rings(sc);
bxe_interrupt_free(sc);
bxe_del_cdev(sc);
if (sc->ifp != NULL) {
@ -15916,6 +16002,7 @@ bxe_attach(device_t dev)
/* allocate the host hardware/software hsi structures */
if (bxe_alloc_hsi_mem(sc) != 0) {
bxe_free_ilt_mem(sc);
bxe_free_buf_rings(sc);
bxe_interrupt_free(sc);
bxe_del_cdev(sc);
if (sc->ifp != NULL) {
@ -16023,12 +16110,16 @@ bxe_detach(device_t dev)
/* free ilt */
bxe_free_ilt_mem(sc);
bxe_free_buf_rings(sc);
/* release the interrupts */
bxe_interrupt_free(sc);
/* Release the mutexes*/
bxe_destroy_fp_mutexs(sc);
bxe_release_mutexes(sc);
/* Release the PCIe BAR mapped memory */
bxe_deallocate_bars(sc);