[dpdk-dev] dev Digest, Vol 83, Issue 176
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From: dev-request
Date: 2016-03-13 23:17
To: dev
Subject: dev Digest, Vol 83, Issue 176
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Today's Topics:
1. Re: [PATCH v8 1/4] lib/ether: optimize struct
rte_eth_tunnel_filter_conf (Thomas Monjalon)
2. Re: [PATCH v8 0/4] This patch set adds tunnel filter support
for IP in GRE on i40e. (Thomas Monjalon)
3. dpdk hash lookup function crashed (segment fault) (??)
4. Re: [PATCH v4 0/4] Add PCAP support to source and sink port
(Thomas Monjalon)
5. Re: [PATCH v3] ip_pipeline: add load balancing function to
pass-through pipeline (Thomas Monjalon)
6. Re: [PATCH] app/test-pmd: add support for zero rx and tx
queues (Thomas Monjalon)
----------------------------------------------------------------------
Message: 1
Date: Sun, 13 Mar 2016 13:01:05 +0100
From: Thomas Monjalon <thomas.monjalon at 6wind.com>
To: Jingjing Wu <jingjing.wu at intel.com>, xutao.sun at intel.com
Cc: dev at dpdk.org, helin.zhang at intel.com, Jijiang Liu
<jijiang.liu at intel.com>
Subject: Re: [dpdk-dev] [PATCH v8 1/4] lib/ether: optimize struct
rte_eth_tunnel_filter_conf
Message-ID: <3488408.ByHyY3dxP7 at xps13>
Content-Type: text/plain; charset="us-ascii"
2016-03-10 11:05, Jingjing Wu:
> From: Xutao Sun <xutao.sun at intel.com>
>
> Change the fields of outer_mac and inner_mac in struct
> rte_eth_tunnel_filter_conf from pointer to struct in order to
> keep the code's readability.
It breaks compilation of examples/tep_termination.
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -6628,8 +6628,10 @@ cmd_tunnel_filter_parsed(void *parsed_result,
> struct rte_eth_tunnel_filter_conf tunnel_filter_conf;
> int ret = 0;
>
> - tunnel_filter_conf.outer_mac = &res->outer_mac;
> - tunnel_filter_conf.inner_mac = &res->inner_mac;
> + rte_memcpy(&tunnel_filter_conf.outer_mac, &res->outer_mac,
> + ETHER_ADDR_LEN);
> + rte_memcpy(&tunnel_filter_conf.inner_mac, &res->inner_mac,
> + ETHER_ADDR_LEN);
Please use ether_addr_copy().
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -5839,10 +5839,10 @@ i40e_dev_tunnel_filter_set(struct i40e_pf *pf,
> }
> pfilter = cld_filter;
>
> - (void)rte_memcpy(&pfilter->outer_mac, tunnel_filter->outer_mac,
> - sizeof(struct ether_addr));
> - (void)rte_memcpy(&pfilter->inner_mac, tunnel_filter->inner_mac,
> - sizeof(struct ether_addr));
> + (void)rte_memcpy(&pfilter->outer_mac, &tunnel_filter->outer_mac,
> + ETHER_ADDR_LEN);
> + (void)rte_memcpy(&pfilter->inner_mac, &tunnel_filter->inner_mac,
> + ETHER_ADDR_LEN);
As already commented in January, please stop this useless return cast.
There is a dedicated function to copy MAC addresses:
ether_addr_copy()
------------------------------
Message: 2
Date: Sun, 13 Mar 2016 15:18:37 +0100
From: Thomas Monjalon <thomas.monjalon at 6wind.com>
To: Jingjing Wu <jingjing.wu at intel.com>, xutao.sun at intel.com
Cc: dev at dpdk.org, helin.zhang at intel.com
Subject: Re: [dpdk-dev] [PATCH v8 0/4] This patch set adds tunnel
filter support for IP in GRE on i40e.
Message-ID: <2132081.GGHc1VANAT at xps13>
Content-Type: text/plain; charset="us-ascii"
2016-03-10 11:05, Jingjing Wu:
> Xutao Sun (4):
> lib/ether: optimize the'rte_eth_tunnel_filter_conf' structure
> lib/ether: add IP in GRE type
> driver/i40e: implement tunnel filter for IP in GRE
> app/test-pmd: test tunnel filter for IP in GRE
I've done the changes for ether_addr_copy and fixed tep_termination.
Applied, thanks
------------------------------
Message: 3
Date: Sun, 13 Mar 2016 22:38:14 +0800 (CST)
From: ?? <zhangwqh at 126.com>
To: dev at dpdk.org
Subject: [dpdk-dev] dpdk hash lookup function crashed (segment fault)
Message-ID: <44245b2a.50bb.1537069ca54.Coremail.zhangwqh at 126.com>
Content-Type: text/plain; charset=GBK
Hi all,
When I use the dpdk lookup function, I met the segment fault problem. Can anybody help to look at why this happens. I will put the aim what I want to do and the related piece of code, and my debug message,
This problem is that in dpdk multi process - client and server example, dpdk-2.2.0/examples/multi_process/client_server_mp
My aim is that server create a hash table, then share it to client. Client will write the hash table, server will read the hash table. I am using dpdk hash table. What I did is that server create a hash table (table and array entries), return the table address. I use memzone pass the table address to client. In client, the second lookup gets segment fault. The system gets crashed. I will put some related code here.
create hash table function:
struct onvm_ft*
onvm_ft_create(int cnt, int entry_size) {
struct rte_hash* hash;
struct onvm_ft* ft;
struct rte_hash_parameters ipv4_hash_params = {
.name = NULL,
.entries = cnt,
.key_len = sizeof(struct onvm_ft_ipv4_5tuple),
.hash_func = NULL,
.hash_func_init_val = 0,
};
char s[64];
/* create ipv4 hash table. use core number and cycle counter to get a unique name. */
ipv4_hash_params.name = s;
ipv4_hash_params.socket_id = rte_socket_id();
snprintf(s, sizeof(s), "onvm_ft_%d-%"PRIu64, rte_lcore_id(), rte_get_tsc_cycles());
hash = rte_hash_create(&ipv4_hash_params);
if (hash == NULL) {
return NULL;
}
ft = (struct onvm_ft*)rte_calloc("table", 1, sizeof(struct onvm_ft), 0);
if (ft == NULL) {
rte_hash_free(hash);
return NULL;
}
ft->hash = hash;
ft->cnt = cnt;
ft->entry_size = entry_size;
/* Create data array for storing values */
ft->data = rte_calloc("entry", cnt, entry_size, 0);
if (ft->data == NULL) {
rte_hash_free(hash);
rte_free(ft);
return NULL;
}
return ft;
}
related structure:
struct onvm_ft {
struct rte_hash* hash;
char* data;
int cnt;
int entry_size;
};
in server side, I will call the create function, use memzone share it to client. The following is what I do:
related variables:
struct onvm_ft *sdn_ft;
struct onvm_ft **sdn_ft_p;
const struct rte_memzone *mz_ftp;
sdn_ft = onvm_ft_create(1024, sizeof(struct onvm_flow_entry));
if(sdn_ft == NULL) {
rte_exit(EXIT_FAILURE, "Unable to create flow table\n");
}
mz_ftp = rte_memzone_reserve(MZ_FTP_INFO, sizeof(struct onvm_ft *),
rte_socket_id(), NO_FLAGS);
if (mz_ftp == NULL) {
rte_exit(EXIT_FAILURE, "Canot reserve memory zone for flow table pointer\n");
}
memset(mz_ftp->addr, 0, sizeof(struct onvm_ft *));
sdn_ft_p = mz_ftp->addr;
*sdn_ft_p = sdn_ft;
In client side:
struct onvm_ft *sdn_ft;
static void
map_flow_table(void) {
const struct rte_memzone *mz_ftp;
struct onvm_ft **ftp;
mz_ftp = rte_memzone_lookup(MZ_FTP_INFO);
if (mz_ftp == NULL)
rte_exit(EXIT_FAILURE, "Cannot get flow table pointer\n");
ftp = mz_ftp->addr;
sdn_ft = *ftp;
}
The following is my debug message: I set a breakpoint in lookup table line. To narrow down the problem, I just send one flow. So the second time and the first time, the packets are the same.
For the first time, it works. I print out the parameters: inside the onvm_ft_lookup function, if there is a related entry, it will return the address by flow_entry.
Breakpoint 1, datapath_handle_read (dp=0x7ffff00008c0) at /home/zhangwei1984/openNetVM-master/openNetVM/examples/flow_table/sdn.c:191
191 ret = onvm_ft_lookup(sdn_ft, fk, (char**)&flow_entry);
(gdb) print *sdn_ft
$1 = {hash = 0x7fff32cce740, data = 0x7fff32cb0480 "", cnt = 1024, entry_size = 56}
(gdb) print *fk
$2 = {src_addr = 419496202, dst_addr = 453050634, src_port = 53764, dst_port = 11798, proto = 17 '\021'}
(gdb) s
onvm_ft_lookup (table=0x7fff32cbe4c0, key=0x7fff32b99d00, data=0x7ffff68d2b00) at /home/zhangwei1984/openNetVM-master/openNetVM/onvm/shared/onvm_flow_table.c:151
151 softrss = onvm_softrss(key);
(gdb) n
152 printf("software rss %d\n", softrss);
(gdb)
software rss 403183624
154 tbl_index = rte_hash_lookup_with_hash(table->hash, (const void *)key, softrss);
(gdb) print table->hash
$3 = (struct rte_hash *) 0x7fff32cce740
(gdb) print *key
$4 = {src_addr = 419496202, dst_addr = 453050634, src_port = 53764, dst_port = 11798, proto = 17 '\021'}
(gdb) print softrss
$5 = 403183624
(gdb) c
After I hit c, it will do the second lookup,
Breakpoint 1, datapath_handle_read (dp=0x7ffff00008c0) at /home/zhangwei1984/openNetVM-master/openNetVM/examples/flow_table/sdn.c:191
191 ret = onvm_ft_lookup(sdn_ft, fk, (char**)&flow_entry);
(gdb) print *sdn_ft
$7 = {hash = 0x7fff32cce740, data = 0x7fff32cb0480 "", cnt = 1024, entry_size = 56}
(gdb) print *fk
$8 = {src_addr = 419496202, dst_addr = 453050634, src_port = 53764, dst_port = 11798, proto = 17 '\021'}
(gdb) s
onvm_ft_lookup (table=0x7fff32cbe4c0, key=0x7fff32b99c00, data=0x7ffff68d2b00) at /home/zhangwei1984/openNetVM-master/openNetVM/onvm/shared/onvm_flow_table.c:151
151 softrss = onvm_softrss(key);
(gdb) n
152 printf("software rss %d\n", softrss);
(gdb) n
software rss 403183624
154 tbl_index = rte_hash_lookup_with_hash(table->hash, (const void *)key, softrss);
(gdb) print table->hash
$9 = (struct rte_hash *) 0x7fff32cce740
(gdb) print *key
$10 = {src_addr = 419496202, dst_addr = 453050634, src_port = 53764, dst_port = 11798, proto = 17 '\021'}
(gdb) print softrss
$11 = 403183624
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x000000000045fb97 in __rte_hash_lookup_bulk ()
(gdb) bt
#0 0x000000000045fb97 in __rte_hash_lookup_bulk ()
#1 0x0000000000000000 in ?? ()
From the debug message, the parameters are exactly the same. I do not know why it has the segmentation fault.
my lookup function:
int
onvm_ft_lookup(struct onvm_ft* table, struct onvm_ft_ipv4_5tuple *key, char** data) {
int32_t tbl_index;
uint32_t softrss;
softrss = onvm_softrss(key);
printf("software rss %d\n", softrss);
tbl_index = rte_hash_lookup_with_hash(table->hash, (const void *)key, softrss);
if (tbl_index >= 0) {
*data = onvm_ft_get_data(table, tbl_index);
return 0;
}
else {
return tbl_index;
}
}
------------------------------
Message: 4
Date: Sun, 13 Mar 2016 15:58:43 +0100
From: Thomas Monjalon <thomas.monjalon at 6wind.com>
To: Fan Zhang <roy.fan.zhang at intel.com>
Cc: dev at dpdk.org
Subject: Re: [dpdk-dev] [PATCH v4 0/4] Add PCAP support to source and
sink port
Message-ID: <1468838.gGGXln9niK at xps13>
Content-Type: text/plain; charset="us-ascii"
2016-03-11 17:08, Fan Zhang:
> This patchset adds feature to source and sink type port in librte_port
> library, and to examples/ip_pipline. Originally, source/sink ports act
> as input and output of NULL packets generator. This patchset enables
> them read from and write to specific PCAP file, to generate and dump
> packets.
[...]
> Fan Zhang (4):
> lib/librte_port: add PCAP file support to source port
> example/ip_pipeline: add PCAP file support
> lib/librte_port: add packet dumping to PCAP file support in sink port
> examples/ip_pipeline: add packets dumping to PCAP file support
Applied, thanks
------------------------------
Message: 5
Date: Sun, 13 Mar 2016 16:09:05 +0100
From: Thomas Monjalon <thomas.monjalon at 6wind.com>
To: Jasvinder Singh <jasvinder.singh at intel.com>
Cc: dev at dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3] ip_pipeline: add load balancing
function to pass-through pipeline
Message-ID: <1644289.O54HJSKTCM at xps13>
Content-Type: text/plain; charset="us-ascii"
2016-03-10 15:29, Jasvinder Singh:
> The pass-through pipeline implementation is extended with load balancing
> function. This function allows uniform distribution of the packets among
> its output ports. For packets distribution, any application level logic
> can be applied. For instance, in this implementation, hash value
> computed over specific header fields of the incoming packets has been
> used to spread traffic uniformly among the output ports.
Applied, thanks
------------------------------
Message: 6
Date: Sun, 13 Mar 2016 16:16:12 +0100
From: Thomas Monjalon <thomas.monjalon at 6wind.com>
To: "Pattan, Reshma" <reshma.pattan at intel.com>
Cc: dev at dpdk.org, "De Lara Guarch, Pablo"
<pablo.de.lara.guarch at intel.com>
Subject: Re: [dpdk-dev] [PATCH] app/test-pmd: add support for zero rx
and tx queues
Message-ID: <1482267.vDSkJW1rPM at xps13>
Content-Type: text/plain; charset="us-ascii"
> > Added testpmd support to validate zero nb_rxq/nb_txq
> > changes of librte_ether.
> >
> > Signed-off-by: Reshma Pattan <reshma.pattan at intel.com>
>
> Acked-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
Applied, thanks
End of dev Digest, Vol 83, Issue 176
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