[dpdk-dev,v2,3/7] pci: Pass rte_pci_addr to functions instead of separate args
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Commit Message
Instead of passing domain, bus, devid, func, just pass
an rte_pci_addr.
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_pci.c | 32 +++++++++++++-------------------
1 file changed, 13 insertions(+), 19 deletions(-)
Comments
On Thursday 24 November 2016 01:37 AM, Ben Walker wrote:
> Instead of passing domain, bus, devid, func, just pass
> an rte_pci_addr.
>
> Signed-off-by: Ben Walker <benjamin.walker@intel.com>
> ---
> lib/librte_eal/linuxapp/eal/eal_pci.c | 32 +++++++++++++-------------------
> 1 file changed, 13 insertions(+), 19 deletions(-)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
> index 876ba38..073af5f 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
> @@ -267,8 +267,7 @@ pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
>
> /* Scan one pci sysfs entry, and fill the devices list from it. */
> static int
> -pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> - uint8_t devid, uint8_t function)
> +pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
> {
> char filename[PATH_MAX];
> unsigned long tmp;
> @@ -281,10 +280,7 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> return -1;
>
> memset(dev, 0, sizeof(*dev));
> - dev->addr.domain = domain;
> - dev->addr.bus = bus;
> - dev->addr.devid = devid;
> - dev->addr.function = function;
> + dev->addr = *addr;
>
> /* get vendor id */
> snprintf(filename, sizeof(filename), "%s/vendor", dirname);
> @@ -429,16 +425,14 @@ pci_update_device(const struct rte_pci_addr *addr)
> pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
> addr->function);
>
> - return pci_scan_one(filename, addr->domain, addr->bus, addr->devid,
> - addr->function);
> + return pci_scan_one(filename, addr);
> }
>
> /*
> * split up a pci address into its constituent parts.
> */
> static int
> -parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
> - uint8_t *bus, uint8_t *devid, uint8_t *function)
> +parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
> {
> /* first split on ':' */
> union splitaddr {
> @@ -466,10 +460,10 @@ parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
>
> /* now convert to int values */
> errno = 0;
> - *domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> - *bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> - *devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> - *function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> + addr->domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> + addr->bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> + addr->devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> + addr->function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> if (errno != 0)
> goto error;
>
> @@ -490,8 +484,7 @@ rte_eal_pci_scan(void)
> struct dirent *e;
> DIR *dir;
> char dirname[PATH_MAX];
> - uint16_t domain;
> - uint8_t bus, devid, function;
> + struct rte_pci_addr addr;
>
> dir = opendir(pci_get_sysfs_path());
> if (dir == NULL) {
> @@ -500,20 +493,21 @@ rte_eal_pci_scan(void)
> return -1;
> }
>
> +
Unnecessary new line.
> while ((e = readdir(dir)) != NULL) {
> if (e->d_name[0] == '.')
> continue;
>
> - if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &domain,
> - &bus, &devid, &function) != 0)
> + if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &addr) != 0)
> continue;
>
> snprintf(dirname, sizeof(dirname), "%s/%s",
> pci_get_sysfs_path(), e->d_name);
> - if (pci_scan_one(dirname, domain, bus, devid, function) < 0)
> + if (pci_scan_one(dirname, &addr) < 0)
> goto error;
> }
> closedir(dir);
> +
> return 0;
>
> error:
>
This is much more cleaner than passing all the BDF entries.
Except the above unnecessary new line:
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Hello Ben,
On Thursday 24 November 2016 01:37 AM, Ben Walker wrote:
> Instead of passing domain, bus, devid, func, just pass
> an rte_pci_addr.
>
> Signed-off-by: Ben Walker <benjamin.walker@intel.com>
> ---
> lib/librte_eal/linuxapp/eal/eal_pci.c | 32 +++++++++++++-------------------
> 1 file changed, 13 insertions(+), 19 deletions(-)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
> index 876ba38..073af5f 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
> @@ -267,8 +267,7 @@ pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
>
> /* Scan one pci sysfs entry, and fill the devices list from it. */
> static int
> -pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> - uint8_t devid, uint8_t function)
> +pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
> {
> char filename[PATH_MAX];
> unsigned long tmp;
> @@ -281,10 +280,7 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> return -1;
>
> memset(dev, 0, sizeof(*dev));
> - dev->addr.domain = domain;
> - dev->addr.bus = bus;
> - dev->addr.devid = devid;
> - dev->addr.function = function;
> + dev->addr = *addr;
>
> /* get vendor id */
> snprintf(filename, sizeof(filename), "%s/vendor", dirname);
> @@ -429,16 +425,14 @@ pci_update_device(const struct rte_pci_addr *addr)
> pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
> addr->function);
>
> - return pci_scan_one(filename, addr->domain, addr->bus, addr->devid,
> - addr->function);
> + return pci_scan_one(filename, addr);
> }
>
> /*
> * split up a pci address into its constituent parts.
> */
> static int
> -parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
> - uint8_t *bus, uint8_t *devid, uint8_t *function)
> +parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
> {
> /* first split on ':' */
> union splitaddr {
> @@ -466,10 +460,10 @@ parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
>
> /* now convert to int values */
> errno = 0;
> - *domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> - *bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> - *devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> - *function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> + addr->domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> + addr->bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> + addr->devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> + addr->function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> if (errno != 0)
> goto error;
>
> @@ -490,8 +484,7 @@ rte_eal_pci_scan(void)
> struct dirent *e;
> DIR *dir;
> char dirname[PATH_MAX];
> - uint16_t domain;
> - uint8_t bus, devid, function;
> + struct rte_pci_addr addr;
>
> dir = opendir(pci_get_sysfs_path());
> if (dir == NULL) {
> @@ -500,20 +493,21 @@ rte_eal_pci_scan(void)
> return -1;
> }
>
> +
> while ((e = readdir(dir)) != NULL) {
> if (e->d_name[0] == '.')
> continue;
>
> - if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &domain,
> - &bus, &devid, &function) != 0)
> + if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &addr) != 0)
> continue;
>
> snprintf(dirname, sizeof(dirname), "%s/%s",
> pci_get_sysfs_path(), e->d_name);
> - if (pci_scan_one(dirname, domain, bus, devid, function) < 0)
> + if (pci_scan_one(dirname, &addr) < 0)
> goto error;
> }
> closedir(dir);
> +
> return 0;
>
> error:
>
Do you mind if I use this patch directly as part of my patchset for bus
Model? I was doing a similar change to make the pci_scan_one simpler
(and pass along a new argument)..
-
Shreyansh
On Thu, 2016-12-01 at 11:56 +0530, Shreyansh Jain wrote:
> Hello Ben,
>
> On Thursday 24 November 2016 01:37 AM, Ben Walker wrote:
> >
> > Instead of passing domain, bus, devid, func, just pass
> > an rte_pci_addr.
> >
> > Signed-off-by: Ben Walker <benjamin.walker@intel.com>
> > ---
> > lib/librte_eal/linuxapp/eal/eal_pci.c | 32 +++++++++++++-------------------
> > 1 file changed, 13 insertions(+), 19 deletions(-)
> >
> > diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c
> > b/lib/librte_eal/linuxapp/eal/eal_pci.c
> > index 876ba38..073af5f 100644
> > --- a/lib/librte_eal/linuxapp/eal/eal_pci.c
> > +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
> > @@ -267,8 +267,7 @@ pci_parse_sysfs_resource(const char *filename, struct
> > rte_pci_device *dev)
> >
> > /* Scan one pci sysfs entry, and fill the devices list from it. */
> > static int
> > -pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> > - uint8_t devid, uint8_t function)
> > +pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
> > {
> > char filename[PATH_MAX];
> > unsigned long tmp;
> > @@ -281,10 +280,7 @@ pci_scan_one(const char *dirname, uint16_t domain,
> > uint8_t bus,
> > return -1;
> >
> > memset(dev, 0, sizeof(*dev));
> > - dev->addr.domain = domain;
> > - dev->addr.bus = bus;
> > - dev->addr.devid = devid;
> > - dev->addr.function = function;
> > + dev->addr = *addr;
> >
> > /* get vendor id */
> > snprintf(filename, sizeof(filename), "%s/vendor", dirname);
> > @@ -429,16 +425,14 @@ pci_update_device(const struct rte_pci_addr *addr)
> > pci_get_sysfs_path(), addr->domain, addr->bus, addr-
> > >devid,
> > addr->function);
> >
> > - return pci_scan_one(filename, addr->domain, addr->bus, addr->devid,
> > - addr->function);
> > + return pci_scan_one(filename, addr);
> > }
> >
> > /*
> > * split up a pci address into its constituent parts.
> > */
> > static int
> > -parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
> > - uint8_t *bus, uint8_t *devid, uint8_t *function)
> > +parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr
> > *addr)
> > {
> > /* first split on ':' */
> > union splitaddr {
> > @@ -466,10 +460,10 @@ parse_pci_addr_format(const char *buf, int bufsize,
> > uint16_t *domain,
> >
> > /* now convert to int values */
> > errno = 0;
> > - *domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> > - *bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> > - *devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> > - *function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> > + addr->domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
> > + addr->bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
> > + addr->devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
> > + addr->function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
> > if (errno != 0)
> > goto error;
> >
> > @@ -490,8 +484,7 @@ rte_eal_pci_scan(void)
> > struct dirent *e;
> > DIR *dir;
> > char dirname[PATH_MAX];
> > - uint16_t domain;
> > - uint8_t bus, devid, function;
> > + struct rte_pci_addr addr;
> >
> > dir = opendir(pci_get_sysfs_path());
> > if (dir == NULL) {
> > @@ -500,20 +493,21 @@ rte_eal_pci_scan(void)
> > return -1;
> > }
> >
> > +
> > while ((e = readdir(dir)) != NULL) {
> > if (e->d_name[0] == '.')
> > continue;
> >
> > - if (parse_pci_addr_format(e->d_name, sizeof(e->d_name),
> > &domain,
> > - &bus, &devid, &function) != 0)
> > + if (parse_pci_addr_format(e->d_name, sizeof(e->d_name),
> > &addr) != 0)
> > continue;
> >
> > snprintf(dirname, sizeof(dirname), "%s/%s",
> > pci_get_sysfs_path(), e->d_name);
> > - if (pci_scan_one(dirname, domain, bus, devid, function) <
> > 0)
> > + if (pci_scan_one(dirname, &addr) < 0)
> > goto error;
> > }
> > closedir(dir);
> > +
> > return 0;
> >
> > error:
> >
>
> Do you mind if I use this patch directly as part of my patchset for bus
> Model? I was doing a similar change to make the pci_scan_one simpler
> (and pass along a new argument)..
Sure, go ahead.
>
> -
> Shreyansh
@@ -267,8 +267,7 @@ pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
/* Scan one pci sysfs entry, and fill the devices list from it. */
static int
-pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
- uint8_t devid, uint8_t function)
+pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
{
char filename[PATH_MAX];
unsigned long tmp;
@@ -281,10 +280,7 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
return -1;
memset(dev, 0, sizeof(*dev));
- dev->addr.domain = domain;
- dev->addr.bus = bus;
- dev->addr.devid = devid;
- dev->addr.function = function;
+ dev->addr = *addr;
/* get vendor id */
snprintf(filename, sizeof(filename), "%s/vendor", dirname);
@@ -429,16 +425,14 @@ pci_update_device(const struct rte_pci_addr *addr)
pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
addr->function);
- return pci_scan_one(filename, addr->domain, addr->bus, addr->devid,
- addr->function);
+ return pci_scan_one(filename, addr);
}
/*
* split up a pci address into its constituent parts.
*/
static int
-parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
- uint8_t *bus, uint8_t *devid, uint8_t *function)
+parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
{
/* first split on ':' */
union splitaddr {
@@ -466,10 +460,10 @@ parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
/* now convert to int values */
errno = 0;
- *domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
- *bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
- *devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
- *function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
+ addr->domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
+ addr->bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
+ addr->devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
+ addr->function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
if (errno != 0)
goto error;
@@ -490,8 +484,7 @@ rte_eal_pci_scan(void)
struct dirent *e;
DIR *dir;
char dirname[PATH_MAX];
- uint16_t domain;
- uint8_t bus, devid, function;
+ struct rte_pci_addr addr;
dir = opendir(pci_get_sysfs_path());
if (dir == NULL) {
@@ -500,20 +493,21 @@ rte_eal_pci_scan(void)
return -1;
}
+
while ((e = readdir(dir)) != NULL) {
if (e->d_name[0] == '.')
continue;
- if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &domain,
- &bus, &devid, &function) != 0)
+ if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &addr) != 0)
continue;
snprintf(dirname, sizeof(dirname), "%s/%s",
pci_get_sysfs_path(), e->d_name);
- if (pci_scan_one(dirname, domain, bus, devid, function) < 0)
+ if (pci_scan_one(dirname, &addr) < 0)
goto error;
}
closedir(dir);
+
return 0;
error: