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net/liquidio: add Tx data path for multiple segments

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Signed-off-by: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Venkat Koppula <venkat.koppula@caviumnetworks.com>
Signed-off-by: Srisivasubramanian S <ssrinivasan@caviumnetworks.com>
Signed-off-by: Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
This commit is contained in:
Shijith Thotton 2017-03-25 11:54:39 +05:30 committed by Ferruh Yigit
parent 1f720275d8
commit 68d3524267
4 changed files with 98 additions and 0 deletions
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1
doc/guides/nics/features/liquidio.ini
View File

@ -4,6 +4,7 @@
; Refer to default.ini for the full list of available PMD features.
;
[Features]
Jumbo frame = Y
Scattered Rx = Y
CRC offload = Y
L3 checksum offload = Y

62
drivers/net/liquidio/lio_rxtx.c
View File

@ -1451,6 +1451,68 @@ lio_dev_xmit_pkts(void *tx_queue, struct rte_mbuf **pkts, uint16_t nb_pkts)
&cmdsetup, tag);
ndata.cmd.cmd3.dptr = rte_mbuf_data_dma_addr(m);
ndata.reqtype = LIO_REQTYPE_NORESP_NET;
} else {
struct lio_buf_free_info *finfo;
struct lio_gather *g;
phys_addr_t phyaddr;
int i, frags;
finfo = (struct lio_buf_free_info *)rte_malloc(NULL,
sizeof(*finfo), 0);
if (finfo == NULL) {
PMD_TX_LOG(lio_dev, ERR,
"free buffer alloc failed\n");
goto xmit_failed;
}
rte_spinlock_lock(&lio_dev->glist_lock[iq_no]);
g = (struct lio_gather *)list_delete_first_node(
&lio_dev->glist_head[iq_no]);
rte_spinlock_unlock(&lio_dev->glist_lock[iq_no]);
if (g == NULL) {
PMD_TX_LOG(lio_dev, ERR,
"Transmit scatter gather: glist null!\n");
goto xmit_failed;
}
cmdsetup.s.gather = 1;
cmdsetup.s.u.gatherptrs = m->nb_segs;
lio_prepare_pci_cmd(lio_dev, &ndata.cmd,
&cmdsetup, tag);
memset(g->sg, 0, g->sg_size);
g->sg[0].ptr[0] = rte_mbuf_data_dma_addr(m);
lio_add_sg_size(&g->sg[0], m->data_len, 0);
pkt_len = m->data_len;
finfo->mbuf = m;
/* First seg taken care above */
frags = m->nb_segs - 1;
i = 1;
m = m->next;
while (frags--) {
g->sg[(i >> 2)].ptr[(i & 3)] =
rte_mbuf_data_dma_addr(m);
lio_add_sg_size(&g->sg[(i >> 2)],
m->data_len, (i & 3));
pkt_len += m->data_len;
i++;
m = m->next;
}
phyaddr = rte_mem_virt2phy(g->sg);
if (phyaddr == RTE_BAD_PHYS_ADDR) {
PMD_TX_LOG(lio_dev, ERR, "bad phys addr\n");
goto xmit_failed;
}
ndata.cmd.cmd3.dptr = phyaddr;
ndata.reqtype = LIO_REQTYPE_NORESP_NET_SG;
finfo->g = g;
finfo->lio_dev = lio_dev;
finfo->iq_no = (uint64_t)iq_no;
ndata.buf = finfo;
}
ndata.datasize = pkt_len;

11
drivers/net/liquidio/lio_rxtx.h
View File

@ -666,6 +666,17 @@ lio_opcode_slow_path(union octeon_rh *rh)
return subcode2 != subcode1;
}
static inline void
lio_add_sg_size(struct lio_sg_entry *sg_entry,
uint16_t size, uint32_t pos)
{
#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
sg_entry->u.size[pos] = size;
#elif RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
sg_entry->u.size[3 - pos] = size;
#endif
}
/* Macro to increment index.
* Index is incremented by count; if the sum exceeds
* max, index is wrapped-around to the start.

24
drivers/net/liquidio/lio_struct.h
View File

@ -298,6 +298,30 @@ struct lio_instr_queue {
const struct rte_memzone *iq_mz;
};
/** This structure is used by driver to store information required
* to free the mbuff when the packet has been fetched by Octeon.
* Bytes offset below assume worst-case of a 64-bit system.
*/
struct lio_buf_free_info {
/** Bytes 1-8. Pointer to network device private structure. */
struct lio_device *lio_dev;
/** Bytes 9-16. Pointer to mbuff. */
struct rte_mbuf *mbuf;
/** Bytes 17-24. Pointer to gather list. */
struct lio_gather *g;
/** Bytes 25-32. Physical address of mbuf->data or gather list. */
uint64_t dptr;
/** Bytes 33-47. Piggybacked soft command, if any */
struct lio_soft_command *sc;
/** Bytes 48-63. iq no */
uint64_t iq_no;
};
/* The Scatter-Gather List Entry. The scatter or gather component used with
* input instruction has this format.
*/