The dsa_switch structure represents the physical switch device itself, and is allocated by the driver. The dsa_switch_tree and dsa_port structures represent the logical switch fabric (eventually composed of multiple switch devices) and its ports, and are allocated by the DSA core.
This branch lists the logical ports directly in the fabric which simplifies the iteration over all ports when assigning the default CPU port or configuring the D in DSA in drivers like mv88e6xxx. This also removes the unique dst->cpu_dp pointer and is a first step towards supporting multiple CPU ports and dropping the DSA_MAX_PORTS limitation. Because the dsa_port structures are not tight to the dsa_switch structure anymore, we do not need to provide an helper for the drivers to allocate a switch structure. Like in many other subsystems, drivers can now embed their dsa_switch structure as they wish into their private structure. This will be particularly interesting for the Broadcom drivers which were currently limited by the dynamically allocated array of DSA ports. The series implements the list of dsa_port structures, makes use of it, then drops dst->cpu_dp and the dsa_switch_alloc helper. Vivien Didelot (16): net: dsa: use dsa_to_port helper everywhere net: dsa: add ports list in the switch fabric net: dsa: use ports list in dsa_to_port net: dsa: use ports list to find slave net: dsa: use ports list to setup switches net: dsa: use ports list for routing table setup net: dsa: use ports list to find a port by node net: dsa: use ports list to setup multiple master devices net: dsa: use ports list to find first CPU port net: dsa: use ports list to setup default CPU port net: dsa: mv88e6xxx: silently skip PVT ops net: dsa: mv88e6xxx: use ports list to map port VLAN net: dsa: mv88e6xxx: use ports list to map bridge net: dsa: sja1105: register switch before assigning port private data net: dsa: allocate ports on touch net: dsa: remove dsa_switch_alloc helper drivers/net/dsa/b53/b53_common.c | 11 +- drivers/net/dsa/bcm_sf2.c | 8 +- drivers/net/dsa/bcm_sf2_cfp.c | 6 +- drivers/net/dsa/dsa_loop.c | 5 +- drivers/net/dsa/lan9303-core.c | 4 +- drivers/net/dsa/lantiq_gswip.c | 4 +- drivers/net/dsa/microchip/ksz_common.c | 5 +- drivers/net/dsa/mt7530.c | 17 +- drivers/net/dsa/mv88e6060.c | 4 +- drivers/net/dsa/mv88e6xxx/chip.c | 87 ++++---- drivers/net/dsa/qca8k.c | 7 +- drivers/net/dsa/realtek-smi-core.c | 5 +- drivers/net/dsa/sja1105/sja1105_main.c | 37 ++-- drivers/net/dsa/vitesse-vsc73xx-core.c | 5 +- include/net/dsa.h | 26 ++- net/dsa/dsa.c | 8 +- net/dsa/dsa2.c | 282 +++++++++++++------------ net/dsa/dsa_priv.h | 23 +- net/dsa/switch.c | 4 +- net/dsa/tag_8021q.c | 6 +- 20 files changed, 297 insertions(+), 257 deletions(-) -- 2.23.0
