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[eoib] Support non-FullMember gateway devices

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Some EoIB implementations utilise an EoIB-to-Ethernet gateway device
that does not perform a FullMember join to the multicast group for the
EoIB broadcast domain.  This has various exciting side-effects, such
as requiring every EoIB node to send every broadcast packet twice.

As an added bonus, the gateway may also break the EoIB MAC address to
GID mapping protocol by sending Ethernet-sourced packets from the
wrong QPN.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-03-09 00:51:08 +00:00
parent 1a9ed68cbb
commit 3144e4fb64
2 changed files with 120 additions and 2 deletions
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22
src/include/ipxe/eoib.h
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@@ -49,10 +49,30 @@ struct eoib_device {
/** Peer cache */
struct list_head peers;
/** Send duplicate packet to gateway (or NULL)
*
* @v eoib EoIB device
* @v original Original I/O buffer
*/
void ( * duplicate ) ( struct eoib_device *eoib,
struct io_buffer *original );
/** Gateway (if any) */
struct ib_address_vector gateway;
/** Multicast group additional component mask */
unsigned int mask;
};
/**
* Check if EoIB device uses a gateway
*
* @v eoib EoIB device
* @v has_gw EoIB device uses a gateway
*/
static inline int eoib_has_gateway ( struct eoib_device *eoib ) {
return ( eoib->duplicate != NULL );
}
/**
* Force creation of multicast group
*
@@ -77,5 +97,7 @@ extern int eoib_create ( struct ib_device *ibdev, const uint8_t *hw_addr,
extern struct eoib_device * eoib_find ( struct ib_device *ibdev,
const uint8_t *hw_addr );
extern void eoib_destroy ( struct eoib_device *eoib );
extern void eoib_set_gateway ( struct eoib_device *eoib,
struct ib_address_vector *av );
#endif /* _IPXE_EOIB_H */