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authorDamjan Marion <damarion@cisco.com>2018-12-19 12:45:18 +0100
committerDave Barach <openvpp@barachs.net>2018-12-22 16:32:39 +0000
commit16d227aa148497e52023c1867614b06060bd04fd (patch)
tree0119dd35ba80280dad5ab558ab29cdcd02fb1bd6 /src/plugins/dpdk
parent27ca2982e1ac5c6f6a980f40c0906f8d8fb857ef (diff)
dpdk: switch to in-memory mode, deprecate use of socket-mem
Change-Id: I3896bf9d71dc300520c53dbe3c2fd8fcd1470881 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/dpdk')
-rw-r--r--src/plugins/dpdk/device/init.c137
1 files changed, 25 insertions, 112 deletions
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index c5c98ab3359..df1a823f6da 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -1137,15 +1137,13 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
dpdk_device_config_t *devconf;
vlib_pci_addr_t pci_addr;
unformat_input_t sub_input;
- uword x;
+ uword default_hugepage_sz, x;
u8 *s, *tmp = 0;
u32 log_level;
int ret, i;
int num_whitelisted = 0;
u8 no_pci = 0;
u8 no_vmbus = 0;
- u8 no_huge = 0;
- u8 huge_dir = 0;
u8 file_prefix = 0;
u8 *socket_mem = 0;
u8 *huge_dir_path = 0;
@@ -1163,7 +1161,6 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
if (unformat (input, "no-hugetlb"))
{
vec_add1 (conf->eal_init_args, (u8 *) "--no-huge");
- no_huge = 1;
}
else if (unformat (input, "enable-tcp-udp-checksum"))
@@ -1255,9 +1252,7 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
#define _(a) \
else if (unformat(input, #a " %s", &s)) \
{ \
- if (!strncmp(#a, "huge-dir", 8)) \
- huge_dir = 1; \
- else if (!strncmp(#a, "file-prefix", 11)) \
+ if (!strncmp(#a, "file-prefix", 11)) \
file_prefix = 1; \
tmp = format (0, "--%s%c", #a, 0); \
vec_add1 (conf->eal_init_args, tmp); \
@@ -1306,107 +1301,29 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
if (!conf->uio_driver_name)
conf->uio_driver_name = format (0, "auto%c", 0);
- /*
- * Use 1G huge pages if available.
- */
- if (!no_huge && !huge_dir)
- {
- u32 x, *mem_by_socket = 0;
- uword c = 0;
- int rv;
-
- umount ((char *) huge_dir_path);
-
- /* Process "socket-mem" parameter value */
- if (vec_len (socket_mem))
- {
- unformat_input_t in;
- unformat_init_vector (&in, socket_mem);
- while (unformat_check_input (&in) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (&in, "%u,", &x))
- ;
- else if (unformat (&in, "%u", &x))
- ;
- else if (unformat (&in, ","))
- x = 0;
- else
- break;
+ default_hugepage_sz = clib_mem_get_default_hugepage_size ();
- vec_add1 (mem_by_socket, x);
- }
- /* Note: unformat_free vec_frees(in.buffer), aka socket_mem... */
- unformat_free (&in);
- socket_mem = 0;
- }
- else
- {
- /* *INDENT-OFF* */
- clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
- {
- vec_validate(mem_by_socket, c);
- mem_by_socket[c] = 64; /* default per-socket mem */
- }
- ));
- /* *INDENT-ON* */
- }
-
- uword default_hugepage_sz = clib_mem_get_default_hugepage_size ();
- /* *INDENT-OFF* */
- clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
- {
- clib_error_t *e;
- uword n_pages;
- vec_validate(mem_by_socket, c);
- n_pages = round_pow2 ((uword) mem_by_socket[c]<<20,
- default_hugepage_sz);
- n_pages /= default_hugepage_sz;
-
- if ((e = clib_sysfs_prealloc_hugepages(c, 0, n_pages)))
- clib_error_report (e);
- }));
- /* *INDENT-ON* */
-
- if (mem_by_socket == 0)
- {
- error = clib_error_return (0, "mem_by_socket NULL");
- goto done;
- }
- _vec_len (mem_by_socket) = c + 1;
-
- /* regenerate socket_mem string */
- vec_foreach_index (x, mem_by_socket)
- socket_mem = format (socket_mem, "%s%u",
- socket_mem ? "," : "", mem_by_socket[x]);
- socket_mem = format (socket_mem, "%c", 0);
-
- vec_free (mem_by_socket);
-
- error = vlib_unix_recursive_mkdir ((char *) huge_dir_path);
- if (error)
- {
- goto done;
- }
-
- rv = mount ("none", (char *) huge_dir_path, "hugetlbfs", 0, NULL);
-
- if (rv)
- {
- error = clib_error_return (0, "mount failed %d", errno);
- goto done;
- }
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (x, tm->cpu_socket_bitmap, (
+ {
+ clib_error_t *e;
+ uword n_pages;
+ /* preallocate at least 16MB of hugepages per socket,
+ if more is needed it is up to consumer to preallocate more */
+ n_pages = round_pow2 ((uword) 16 << 20, default_hugepage_sz);
+ n_pages /= default_hugepage_sz;
+
+ if ((e = clib_sysfs_prealloc_hugepages(x, 0, n_pages)))
+ clib_error_report (e);
+ }));
+ /* *INDENT-ON* */
- tmp = format (0, "--huge-dir%c", 0);
+ if (!file_prefix)
+ {
+ tmp = format (0, "--file-prefix%c", 0);
vec_add1 (conf->eal_init_args, tmp);
- tmp = format (0, "%s%c", huge_dir_path, 0);
+ tmp = format (0, "vpp%c", 0);
vec_add1 (conf->eal_init_args, tmp);
- if (!file_prefix)
- {
- tmp = format (0, "--file-prefix%c", 0);
- vec_add1 (conf->eal_init_args, tmp);
- tmp = format (0, "vpp%c", 0);
- vec_add1 (conf->eal_init_args, tmp);
- }
}
if (error)
@@ -1485,14 +1402,9 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input)
tmp = format (0, "%u%c", tm->main_lcore, 0);
vec_add1 (conf->eal_init_args, tmp);
- /* set socket-mem */
- if (!no_huge)
- {
- tmp = format (0, "--socket-mem%c", 0);
- vec_add1 (conf->eal_init_args, tmp);
- tmp = format (0, "%s%c", socket_mem, 0);
- vec_add1 (conf->eal_init_args, tmp);
- }
+
+ if (socket_mem)
+ clib_warning ("socket-mem argument is deprecated");
/* NULL terminate the "argv" vector, in case of stupidity */
vec_add1 (conf->eal_init_args, 0);
@@ -1860,6 +1772,7 @@ dpdk_init (vlib_main_t * vm)
dm->conf->nchannels = 4;
dm->conf->num_mbufs = dm->conf->num_mbufs ? dm->conf->num_mbufs : NB_MBUF;
vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
+ vec_add1 (dm->conf->eal_init_args, (u8 *) "--in-memory");
/* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
dm->buffer_flags_template = (VLIB_BUFFER_TOTAL_LENGTH_VALID |