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env: Add a function to convert pci addr to string

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Convert an spdk_pci_addr to a string.

Change-Id: Idab0a16822cc37d7095d19f062dfca65356211e8
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Ben Walker 2016-12-02 11:00:55 -07:00 committed by Daniel Verkamp
parent 8a9c1d4011
commit 4caf3c563a
2 changed files with 29 additions and 0 deletions
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13
include/spdk/env.h
View File

@ -237,6 +237,19 @@ int spdk_pci_addr_compare(const struct spdk_pci_addr *a1, const struct spdk_pci_
*/
int spdk_pci_addr_parse(struct spdk_pci_addr *addr, const char *bdf);
/**
* Convert a struct spdk_pci_addr to a string.
*
* \param bdf String into which a string will be output in the format
* domain:bus:device.function. The string must be at least
* 14 characters in size.
* \param sz Size of bdf. Must be at least 14.
* \param addr PCI address input
*
* \return 0 on success, or a negated errno value on failure.
*/
int spdk_pci_addr_fmt(char *bdf, size_t sz, const struct spdk_pci_addr *addr);
/**
* Call a function with CPU affinity unset.
*

16
lib/env_dpdk/pci.c
View File

@ -429,3 +429,19 @@ spdk_pci_addr_parse(struct spdk_pci_addr *addr, const char *bdf)
return 0;
}
int
spdk_pci_addr_fmt(char *bdf, size_t sz, const struct spdk_pci_addr *addr)
{
int rc;
rc = snprintf(bdf, sz, PCI_PRI_FMT,
addr->domain, addr->bus,
addr->dev, addr->func);
if (rc > 0 && (size_t)rc < sz) {
return 0;
}
return -1;
}